Posts by Tag
Pick a tag to see its posts.
ab-testing 1 post
- A/B Testing: A Sample Analysis2025-11-18
A/B Testing-- A Sample Analysis. Scenario-- Testing a new button color.
academia 1 post
- The Best Order to Write a Research Paper2026-09-11
Why writing a paper top-to-bottom causes writer's block, and the inside-out sequence experienced researchers use instead.
ai 1 post
- Reading Papers in the AI Age: A Hybrid Workflow2026-09-05
Why the best strategy for reading research today isn't AI summaries or full reads alone, but a 3-pass hybrid workflow that combines both.
anova 1 post
- From t-test to Anova2025-10-10
Let’s build this step by step, starting from a **t-test** and then showing how it generalizes naturally into **ANOVA** (Analysis of Variance).
ar 1 post
- AutoRegressive and Moving Average Time Series Models with R Code2024-02-23
A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.
arima 2 posts
- ARIMA and SARIMA Time Series Models2025-10-06
A **clear, concise explanation** of **ARIMA**, **SARIMA**, and related models — followed by **minimal R examples**..
- SARIMAX Time Series Models with R Code2024-01-20
A **clear, concise explanation** of **ARIMA**, **SARIMA**, and related models — followed by **minimal R examples**..
arrays 1 post
- Tossing a Die in C Until We Get a 62026-10-02
Track every roll of a die in C: print as we go, store the history in an array, tally frequencies, and list which steps produced each face.
auto-arima 1 post
- Interpretation of an Auto SARIMAX model output in R2024-03-16
A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.
batch-processing 1 post
- Batch-Converting PDFs to Markdown with MarkItDown2026-09-11
Microsoft's MarkItDown CLI only converts one file at a time — here's how to batch an entire folder of PDFs with a shell loop or a short Python script.
beginners 1 post
- C's "Hello, World!" Explained Line by Line (for R & Python Users)2026-07-21
A line-by-line breakdown of the classic C Hello World program — what each part does, why C requires it, and how it compares to Python and R.
bernoulli-trials 1 post
- Why Use the Geometric Distribution?2026-08-05
The geometric distribution models the number of trials until the first success in independent Bernoulli trials. This post explains when and why to use it, with a real-world example and R visualization.
binomial 1 post
- The Probability of Having Four Babies of the Same Sex2026-09-16
A binomial-distribution proof that a family of 4 children has exactly a 1-in-8 (12.5%) chance of all four being the same sex.
bootable-drive 1 post
- How to Reset a Bootable USB Drive Using the Linux Command Line2026-06-02
A step-by-step guide to safely wiping a bootable Linux live USB and converting it back into a standard storage drive.
break 2 posts
- The switch Statement in C: Syntax, break, Fall-Through and Examples2026-09-26
How C's switch statement works: matching cases, break, default, deliberate fall-through, grouped cases, chars and enums, and when to choose switch over if / else if.
- The do-while Loop in C: Run First, Check After2026-07-16
How C's do-while loop works: the body always runs at least once before the condition is tested. Two PIN-entry examples, plus do-while vs while and common pitfalls.
c 12 posts
- Tossing a Die in C Until We Get a 62026-10-02
Track every roll of a die in C: print as we go, store the history in an array, tally frequencies, and list which steps produced each face.
- float vs double in C: Precision, Memory, and When to Use Which2026-09-26
How C's float and double differ in precision, size, range, literals and format specifiers, with real compiler output showing where float goes wrong.
- The switch Statement in C: Syntax, break, Fall-Through and Examples2026-09-26
How C's switch statement works: matching cases, break, default, deliberate fall-through, grouped cases, chars and enums, and when to choose switch over if / else if.
- 10 Short Real-World C Programming Examples (if + Loop Patterns)2026-09-24
Ten compact C snippets — from an ATM PIN check to a vending machine — each pairing a loop for repetition with an if for decision-making, with the real-world problem and a quick walkthrough of the code.
- Modulus vs. Remainder: Why -5 % 3 Isn't the Same Everywhere2026-09-24
Modulus and remainder agree for positive numbers but diverge for negative ones. A walkthrough of the truncated vs. floored division rules behind C, Python, and R's % and %% operators.
- if-else in C, Python and R: Syntax Compared Side by Side2026-09-21
The same if / else if / else written in C, Python and R, with a comparison table, the R 'else on a new line' trap, truthiness rules, and R's vectorized ifelse().
- Compiling and Running C Programs on Linux: A Practical Workflow2026-09-20
Faster ways to compile and run C on Linux — one-liners, aliases, and Makefiles — plus the warning flags, debugging tools, and practice routine every beginner should adopt.
- Nested if in C, Explained with Real-Life Examples2026-09-15
What a nested if statement is in C, when the inner check runs, and two worked examples (a store discount and an ATM withdrawal) with flowcharts, code and common pitfalls.
- Structs in C: Grouping Related Data (with Python and R Comparisons)2026-08-20
How C structs group different types into one unit: student records, arrays of structs, points, linked-list nodes, typedef, ->, padding, and how structs compare with Python dicts and R lists.
- 10 Real-World if / else Examples in C2026-08-10
Ten real-world C snippets, from grade calculators to ATM checks, each showing a different if/else pattern and when to use it.
- C's "Hello, World!" Explained Line by Line (for R & Python Users)2026-07-21
A line-by-line breakdown of the classic C Hello World program — what each part does, why C requires it, and how it compares to Python and R.
- The do-while Loop in C: Run First, Check After2026-07-16
How C's do-while loop works: the body always runs at least once before the condition is tested. Two PIN-entry examples, plus do-while vs while and common pitfalls.
central-tendency 1 post
- Why Dispersion Matters as Much as Central Tendency2026-09-09
The mean or median only tells half the story — measures of spread like variance, standard deviation, and IQR reveal risk and consistency that averages hide.
checklist 1 post
- CRAN Package Submission Checklist2025-08-29
A comprehensive checklist for a smooth R package submission to CRAN.
circular-data 1 post
- clockplot: Plot Event Times on a 24-Hour Clock2025-08-30
The announcement of the clockplot package.
classification 1 post
- SVM vs ANN: relative power, and usage guidelines2026-01-05
Here's a clear comparison of SVM vs ANN, their relative power, and usage guidelines.
clockplot 1 post
- clockplot: Plot Event Times on a 24-Hour Clock2025-08-30
The announcement of the clockplot package.
combinatorics 1 post
- The Probability of Having Four Babies of the Same Sex2026-09-16
A binomial-distribution proof that a family of 4 children has exactly a 1-in-8 (12.5%) chance of all four being the same sex.
command-line 1 post
- How to Reset a Bootable USB Drive Using the Linux Command Line2026-06-02
A step-by-step guide to safely wiping a bootable Linux live USB and converting it back into a standard storage drive.
compiling 1 post
- Compiling and Running C Programs on Linux: A Practical Workflow2026-09-20
Faster ways to compile and run C on Linux — one-liners, aliases, and Makefiles — plus the warning flags, debugging tools, and practice routine every beginner should adopt.
conditionals 3 posts
- The switch Statement in C: Syntax, break, Fall-Through and Examples2026-09-26
How C's switch statement works: matching cases, break, default, deliberate fall-through, grouped cases, chars and enums, and when to choose switch over if / else if.
- if-else in C, Python and R: Syntax Compared Side by Side2026-09-21
The same if / else if / else written in C, Python and R, with a comparison table, the R 'else on a new line' trap, truthiness rules, and R's vectorized ifelse().
- 10 Real-World if / else Examples in C2026-08-10
Ten real-world C snippets, from grade calculators to ATM checks, each showing a different if/else pattern and when to use it.
control-flow 5 posts
- The switch Statement in C: Syntax, break, Fall-Through and Examples2026-09-26
How C's switch statement works: matching cases, break, default, deliberate fall-through, grouped cases, chars and enums, and when to choose switch over if / else if.
- 10 Short Real-World C Programming Examples (if + Loop Patterns)2026-09-24
Ten compact C snippets — from an ATM PIN check to a vending machine — each pairing a loop for repetition with an if for decision-making, with the real-world problem and a quick walkthrough of the code.
- Nested if in C, Explained with Real-Life Examples2026-09-15
What a nested if statement is in C, when the inner check runs, and two worked examples (a store discount and an ATM withdrawal) with flowcharts, code and common pitfalls.
- 10 Real-World if / else Examples in C2026-08-10
Ten real-world C snippets, from grade calculators to ATM checks, each showing a different if/else pattern and when to use it.
- The do-while Loop in C: Run First, Check After2026-07-16
How C's do-while loop works: the body always runs at least once before the condition is tested. Two PIN-entry examples, plus do-while vs while and common pitfalls.
count-data 1 post
- Poisson Regression: A Simple Example2026-01-02
Poisson regression is a statistical model for analyzing count data (e.g., number of events, calls, clicks) that occur in a fixed interval, using the Poisson distribution.
cran 1 post
- CRAN Package Submission Checklist2025-08-29
A comprehensive checklist for a smooth R package submission to CRAN.
credential-helper 1 post
- How to Save Git Credentials on Windows, macOS, and Linux2026-06-01
A quick guide to configuring Git credential helpers so you never have to re-type your password or token.
credentials 1 post
- How to Save Git Credentials on Windows, macOS, and Linux2026-06-01
A quick guide to configuring Git credential helpers so you never have to re-type your password or token.
data-structures 1 post
- Structs in C: Grouping Related Data (with Python and R Comparisons)2026-08-20
How C structs group different types into one unit: student records, arrays of structs, points, linked-list nodes, typedef, ->, padding, and how structs compare with Python dicts and R lists.
data-types 1 post
- float vs double in C: Precision, Memory, and When to Use Which2026-09-26
How C's float and double differ in precision, size, range, literals and format specifiers, with real compiler output showing where float goes wrong.
devtools 1 post
- R Package Development Workflow2025-08-29
The Workflow that you may follow while developing your own R package.
discrete-distributions 2 posts
- Why Use the Geometric Distribution?2026-08-05
The geometric distribution models the number of trials until the first success in independent Bernoulli trials. This post explains when and why to use it, with a real-world example and R visualization.
- Understanding the Negative Binomial Distribution2026-05-12
The negative binomial distribution models the number of trials needed to achieve a fixed number of successes. This post explains its formulation, real-world applications, and provides a visual example.
dispersion 2 posts
- Why Dispersion Matters as Much as Central Tendency2026-09-09
The mean or median only tells half the story — measures of spread like variance, standard deviation, and IQR reveal risk and consistency that averages hide.
- IQR in Statistics2025-11-05
The Interquartile Range (IQR) is a measure of statistical dispersion that describes the spread of the middle 50% of data.
do-while 1 post
- The do-while Loop in C: Run First, Check After2026-07-16
How C's do-while loop works: the body always runs at least once before the condition is tested. Two PIN-entry examples, plus do-while vs while and common pitfalls.
double 1 post
- float vs double in C: Precision, Memory, and When to Use Which2026-09-26
How C's float and double differ in precision, size, range, literals and format specifiers, with real compiler output showing where float goes wrong.
enum 1 post
- The switch Statement in C: Syntax, break, Fall-Through and Examples2026-09-26
How C's switch statement works: matching cases, break, default, deliberate fall-through, grouped cases, chars and enums, and when to choose switch over if / else if.
examples 2 posts
- 10 Short Real-World C Programming Examples (if + Loop Patterns)2026-09-24
Ten compact C snippets — from an ATM PIN check to a vending machine — each pairing a loop for repetition with an if for decision-making, with the real-world problem and a quick walkthrough of the code.
- 10 Real-World if / else Examples in C2026-08-10
Ten real-world C snippets, from grade calculators to ATM checks, each showing a different if/else pattern and when to use it.
experiment-design 1 post
- A/B Testing: A Sample Analysis2025-11-18
A/B Testing-- A Sample Analysis. Scenario-- Testing a new button color.
fall-through 1 post
- The switch Statement in C: Syntax, break, Fall-Through and Examples2026-09-26
How C's switch statement works: matching cases, break, default, deliberate fall-through, grouped cases, chars and enums, and when to choose switch over if / else if.
fish 1 post
- The Ultimate Guide to Making Fish Your Default Shell2026-09-07
How to install Fish and set it as your default shell on Ubuntu, Fedora, Arch, and Pop!_OS — including the terminal-profile workaround GNOME-based distros need.
float 1 post
- float vs double in C: Precision, Memory, and When to Use Which2026-09-26
How C's float and double differ in precision, size, range, literals and format specifiers, with real compiler output showing where float goes wrong.
floating-point 1 post
- float vs double in C: Precision, Memory, and When to Use Which2026-09-26
How C's float and double differ in precision, size, range, literals and format specifiers, with real compiler output showing where float goes wrong.
forecasting 1 post
- ARIMA and SARIMA Time Series Models2025-10-06
A **clear, concise explanation** of **ARIMA**, **SARIMA**, and related models — followed by **minimal R examples**..
frequency-count 1 post
- Tossing a Die in C Until We Get a 62026-10-02
Track every roll of a die in C: print as we go, store the history in an array, tally frequencies, and list which steps produced each face.
frozen-desktop 1 post
- How to Recover a Frozen Linux Desktop2026-09-09
Two escalating fixes for a hung Linux graphical session, from restarting the display manager over TTY to a safe REISUB reboot.
fun 1 post
- Be Impressive with Mathematics2026-04-23
A satirical note showing how \(1+1=2\) can be obscured using complex identities to appear more impressive for academic reviewers.
gcc 1 post
- Compiling and Running C Programs on Linux: A Practical Workflow2026-09-20
Faster ways to compile and run C on Linux — one-liners, aliases, and Makefiles — plus the warning flags, debugging tools, and practice routine every beginner should adopt.
geometric-distribution 1 post
- Why Use the Geometric Distribution?2026-08-05
The geometric distribution models the number of trials until the first success in independent Bernoulli trials. This post explains when and why to use it, with a real-world example and R visualization.
gis 1 post
- Spatio-temporal Analysis Workflow2025-09-10
A learning roadmap for spatio-temporal analysis, from spatial statistics foundations to R/Python tooling, datasets, and open-source contribution paths.
git 2 posts
- How to Save Git Credentials on Windows, macOS, and Linux2026-06-01
A quick guide to configuring Git credential helpers so you never have to re-type your password or token.
- How to Make Git Ignore a Folder2026-01-05
Two ways to stop Git from tracking a folder — depending on whether it's already been committed or not.
gitignore 1 post
- How to Make Git Ignore a Folder2026-01-05
Two ways to stop Git from tracking a folder — depending on whether it's already been committed or not.
glm 1 post
- Poisson Regression: A Simple Example2026-01-02
Poisson regression is a statistical model for analyzing count data (e.g., number of events, calls, clicks) that occur in a fixed interval, using the Poisson distribution.
hello-world 1 post
- C's "Hello, World!" Explained Line by Line (for R & Python Users)2026-07-21
A line-by-line breakdown of the classic C Hello World program — what each part does, why C requires it, and how it compares to Python and R.
hsi 1 post
- Hyperspectral Imaging Explained2025-12-24
Imagine your eyes (or a regular camera) see the world in only **3 colors:** Red, Green, and Blue (RGB). By mixing these, you can create millions of perceived colors, but you can't see the specific "fingerprint" of light that makes a leaf, a mineral, or a painted pigment unique.
hyperspectral-imaging 1 post
- Hyperspectral Imaging Explained2025-12-24
Imagine your eyes (or a regular camera) see the world in only **3 colors:** Red, Green, and Blue (RGB). By mixing these, you can create millions of perceived colors, but you can't see the specific "fingerprint" of light that makes a leaf, a mineral, or a painted pigment unique.
hypothesis-testing 2 posts
- A/B Testing: A Sample Analysis2025-11-18
A/B Testing-- A Sample Analysis. Scenario-- Testing a new button color.
- From t-test to Anova2025-10-10
Let’s build this step by step, starting from a **t-test** and then showing how it generalizes naturally into **ANOVA** (Analysis of Variance).
if-else 4 posts
- 10 Short Real-World C Programming Examples (if + Loop Patterns)2026-09-24
Ten compact C snippets — from an ATM PIN check to a vending machine — each pairing a loop for repetition with an if for decision-making, with the real-world problem and a quick walkthrough of the code.
- if-else in C, Python and R: Syntax Compared Side by Side2026-09-21
The same if / else if / else written in C, Python and R, with a comparison table, the R 'else on a new line' trap, truthiness rules, and R's vectorized ifelse().
- Nested if in C, Explained with Real-Life Examples2026-09-15
What a nested if statement is in C, when the inner check runs, and two worked examples (a store discount and an ATM withdrawal) with flowcharts, code and common pitfalls.
- 10 Real-World if / else Examples in C2026-08-10
Ten real-world C snippets, from grade calculators to ATM checks, each showing a different if/else pattern and when to use it.
imaging 3 posts
- Hyperspectral Imaging Explained2025-12-24
Imagine your eyes (or a regular camera) see the world in only **3 colors:** Red, Green, and Blue (RGB). By mixing these, you can create millions of perceived colors, but you can't see the specific "fingerprint" of light that makes a leaf, a mineral, or a painted pigment unique.
- Understanding Mass Spectrometry Imaging2025-12-22
Imagine you could take a photograph of a slice of tissue, a leaf, or a painting, but instead of seeing colors, you see a **map of hundreds of different molecules**—fats, sugars, drugs, proteins—exactly where they are located.
- Micro-XRF: super-powered, non-destructive chemical camera2025-12-20
Micro-XRF is the super-powered, non-destructive chemical and super-sleuth chemical Camera.
input-validation 1 post
- The do-while Loop in C: Run First, Check After2026-07-16
How C's do-while loop works: the body always runs at least once before the condition is tested. Two PIN-entry examples, plus do-while vs while and common pitfalls.
interaction-effect 1 post
- Interaction Effect in Regression Analysis2025-11-19
An **interaction effect** means the effect of one variable on the outcome depends on the level of another variable.
iqr 2 posts
- Why Dispersion Matters as Much as Central Tendency2026-09-09
The mean or median only tells half the story — measures of spread like variance, standard deviation, and IQR reveal risk and consistency that averages hide.
- IQR in Statistics2025-11-05
The Interquartile Range (IQR) is a measure of statistical dispersion that describes the spread of the middle 50% of data.
linux 4 posts
- Compiling and Running C Programs on Linux: A Practical Workflow2026-09-20
Faster ways to compile and run C on Linux — one-liners, aliases, and Makefiles — plus the warning flags, debugging tools, and practice routine every beginner should adopt.
- How to Recover a Frozen Linux Desktop2026-09-09
Two escalating fixes for a hung Linux graphical session, from restarting the display manager over TTY to a safe REISUB reboot.
- The Ultimate Guide to Making Fish Your Default Shell2026-09-07
How to install Fish and set it as your default shell on Ubuntu, Fedora, Arch, and Pop!_OS — including the terminal-profile workaround GNOME-based distros need.
- How to Reset a Bootable USB Drive Using the Linux Command Line2026-06-02
A step-by-step guide to safely wiping a bootable Linux live USB and converting it back into a standard storage drive.
loops 3 posts
- Tossing a Die in C Until We Get a 62026-10-02
Track every roll of a die in C: print as we go, store the history in an array, tally frequencies, and list which steps produced each face.
- 10 Short Real-World C Programming Examples (if + Loop Patterns)2026-09-24
Ten compact C snippets — from an ATM PIN check to a vending machine — each pairing a loop for repetition with an if for decision-making, with the real-world problem and a quick walkthrough of the code.
- The do-while Loop in C: Run First, Check After2026-07-16
How C's do-while loop works: the body always runs at least once before the condition is tested. Two PIN-entry examples, plus do-while vs while and common pitfalls.
ma 1 post
- AutoRegressive and Moving Average Time Series Models with R Code2024-02-23
A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.
machine-learning 1 post
- SVM vs ANN: relative power, and usage guidelines2026-01-05
Here's a clear comparison of SVM vs ANN, their relative power, and usage guidelines.
makefile 1 post
- Compiling and Running C Programs on Linux: A Practical Workflow2026-09-20
Faster ways to compile and run C on Linux — one-liners, aliases, and Makefiles — plus the warning flags, debugging tools, and practice routine every beginner should adopt.
markdown 1 post
- Batch-Converting PDFs to Markdown with MarkItDown2026-09-11
Microsoft's MarkItDown CLI only converts one file at a time — here's how to batch an entire folder of PDFs with a shell loop or a short Python script.
markitdown 1 post
- Batch-Converting PDFs to Markdown with MarkItDown2026-09-11
Microsoft's MarkItDown CLI only converts one file at a time — here's how to batch an entire folder of PDFs with a shell loop or a short Python script.
mass-spectrometry 1 post
- Understanding Mass Spectrometry Imaging2025-12-22
Imagine you could take a photograph of a slice of tissue, a leaf, or a painting, but instead of seeing colors, you see a **map of hundreds of different molecules**—fats, sugars, drugs, proteins—exactly where they are located.
math 1 post
- Be Impressive with Mathematics2026-04-23
A satirical note showing how \(1+1=2\) can be obscured using complex identities to appear more impressive for academic reviewers.
memory-layout 1 post
- Structs in C: Grouping Related Data (with Python and R Comparisons)2026-08-20
How C structs group different types into one unit: student records, arrays of structs, points, linked-list nodes, typedef, ->, padding, and how structs compare with Python dicts and R lists.
micro-xrf 1 post
- Micro-XRF: super-powered, non-destructive chemical camera2025-12-20
Micro-XRF is the super-powered, non-destructive chemical and super-sleuth chemical Camera.
model-interpretation 1 post
- Interpretation of an Auto SARIMAX model output in R2024-03-16
A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.
modulus 1 post
- Modulus vs. Remainder: Why -5 % 3 Isn't the Same Everywhere2026-09-24
Modulus and remainder agree for positive numbers but diverge for negative ones. A walkthrough of the truncated vs. floored division rules behind C, Python, and R's % and %% operators.
msi 1 post
- Understanding Mass Spectrometry Imaging2025-12-22
Imagine you could take a photograph of a slice of tissue, a leaf, or a painting, but instead of seeing colors, you see a **map of hundreds of different molecules**—fats, sugars, drugs, proteins—exactly where they are located.
negative-binomial 1 post
- Understanding the Negative Binomial Distribution2026-05-12
The negative binomial distribution models the number of trials needed to achieve a fixed number of successes. This post explains its formulation, real-world applications, and provides a visual example.
nested-if 1 post
- Nested if in C, Explained with Real-Life Examples2026-09-15
What a nested if statement is in C, when the inner check runs, and two worked examples (a store discount and an ATM withdrawal) with flowcharts, code and common pitfalls.
neural-network 1 post
- SVM vs ANN: relative power, and usage guidelines2026-01-05
Here's a clear comparison of SVM vs ANN, their relative power, and usage guidelines.
normal-distribution 1 post
- Z-score: What it is and what it does2025-11-19
A **z-score** (also known as a **standard score** or **z-value**) measures how many standard deviations a data point is from the mean of a distribution. It's a way of standardizing individual data points so they can be compared, regardless of the scale of the data.
operators 1 post
- Modulus vs. Remainder: Why -5 % 3 Isn't the Same Everywhere2026-09-24
Modulus and remainder agree for positive numbers but diverge for negative ones. A walkthrough of the truncated vs. floored division rules behind C, Python, and R's % and %% operators.
outliers 1 post
- IQR in Statistics2025-11-05
The Interquartile Range (IQR) is a measure of statistical dispersion that describes the spread of the middle 50% of data.
pdf 1 post
- Batch-Converting PDFs to Markdown with MarkItDown2026-09-11
Microsoft's MarkItDown CLI only converts one file at a time — here's how to batch an entire folder of PDFs with a shell loop or a short Python script.
poisson-regression 1 post
- Poisson Regression: A Simple Example2026-01-02
Poisson regression is a statistical model for analyzing count data (e.g., number of events, calls, clicks) that occur in a fixed interval, using the Poisson distribution.
pop-os 1 post
- The Ultimate Guide to Making Fish Your Default Shell2026-09-07
How to install Fish and set it as your default shell on Ubuntu, Fedora, Arch, and Pop!_OS — including the terminal-profile workaround GNOME-based distros need.
precision 1 post
- float vs double in C: Precision, Memory, and When to Use Which2026-09-26
How C's float and double differ in precision, size, range, literals and format specifiers, with real compiler output showing where float goes wrong.
printf 1 post
- C's "Hello, World!" Explained Line by Line (for R & Python Users)2026-07-21
A line-by-line breakdown of the classic C Hello World program — what each part does, why C requires it, and how it compares to Python and R.
probability 3 posts
- The Probability of Having Four Babies of the Same Sex2026-09-16
A binomial-distribution proof that a family of 4 children has exactly a 1-in-8 (12.5%) chance of all four being the same sex.
- Why Use the Geometric Distribution?2026-08-05
The geometric distribution models the number of trials until the first success in independent Bernoulli trials. This post explains when and why to use it, with a real-world example and R visualization.
- Understanding the Negative Binomial Distribution2026-05-12
The negative binomial distribution models the number of trials needed to achieve a fixed number of successes. This post explains its formulation, real-world applications, and provides a visual example.
python 4 posts
- Modulus vs. Remainder: Why -5 % 3 Isn't the Same Everywhere2026-09-24
Modulus and remainder agree for positive numbers but diverge for negative ones. A walkthrough of the truncated vs. floored division rules behind C, Python, and R's % and %% operators.
- if-else in C, Python and R: Syntax Compared Side by Side2026-09-21
The same if / else if / else written in C, Python and R, with a comparison table, the R 'else on a new line' trap, truthiness rules, and R's vectorized ifelse().
- Batch-Converting PDFs to Markdown with MarkItDown2026-09-11
Microsoft's MarkItDown CLI only converts one file at a time — here's how to batch an entire folder of PDFs with a shell loop or a short Python script.
- How to Run Python Inside RStudio with reticulate2026-08-18
Set up RStudio to run Python code alongside R — configure the interpreter, install reticulate, and use three different workflows (scripts, mixed Quarto/R Markdown chunks, and calling Python from R directly).
python-dict 1 post
- Structs in C: Grouping Related Data (with Python and R Comparisons)2026-08-20
How C structs group different types into one unit: student records, arrays of structs, points, linked-list nodes, typedef, ->, padding, and how structs compare with Python dicts and R lists.
qdraw 1 post
- What's New in qdraw: Shapes, Pages, and a Smarter Eraser2026-08-29
A tour of the latest qdraw features — a Quarto reveal.js extension for drawing and annotating directly on slides during a live presentation.
quartiles 1 post
- IQR in Statistics2025-11-05
The Interquartile Range (IQR) is a measure of statistical dispersion that describes the spread of the middle 50% of data.
quarto 1 post
- What's New in qdraw: Shapes, Pages, and a Smarter Eraser2026-08-29
A tour of the latest qdraw features — a Quarto reveal.js extension for drawing and annotating directly on slides during a live presentation.
r 9 posts
- Modulus vs. Remainder: Why -5 % 3 Isn't the Same Everywhere2026-09-24
Modulus and remainder agree for positive numbers but diverge for negative ones. A walkthrough of the truncated vs. floored division rules behind C, Python, and R's % and %% operators.
- if-else in C, Python and R: Syntax Compared Side by Side2026-09-21
The same if / else if / else written in C, Python and R, with a comparison table, the R 'else on a new line' trap, truthiness rules, and R's vectorized ifelse().
- How to Run Python Inside RStudio with reticulate2026-08-18
Set up RStudio to run Python code alongside R — configure the interpreter, install reticulate, and use three different workflows (scripts, mixed Quarto/R Markdown chunks, and calling Python from R directly).
- ARIMA and SARIMA Time Series Models2025-10-06
A **clear, concise explanation** of **ARIMA**, **SARIMA**, and related models — followed by **minimal R examples**..
- Spatio-temporal Analysis Workflow2025-09-10
A learning roadmap for spatio-temporal analysis, from spatial statistics foundations to R/Python tooling, datasets, and open-source contribution paths.
- clockplot: Plot Event Times on a 24-Hour Clock2025-08-30
The announcement of the clockplot package.
- Interpretation of an Auto SARIMAX model output in R2024-03-16
A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.
- AutoRegressive and Moving Average Time Series Models with R Code2024-02-23
A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.
- SARIMAX Time Series Models with R Code2024-01-20
A **clear, concise explanation** of **ARIMA**, **SARIMA**, and related models — followed by **minimal R examples**..
r-list 1 post
- Structs in C: Grouping Related Data (with Python and R Comparisons)2026-08-20
How C structs group different types into one unit: student records, arrays of structs, points, linked-list nodes, typedef, ->, padding, and how structs compare with Python dicts and R lists.
r-package 3 posts
- clockplot: Plot Event Times on a 24-Hour Clock2025-08-30
The announcement of the clockplot package.
- CRAN Package Submission Checklist2025-08-29
A comprehensive checklist for a smooth R package submission to CRAN.
- R Package Development Workflow2025-08-29
The Workflow that you may follow while developing your own R package.
rand 1 post
- Tossing a Die in C Until We Get a 62026-10-02
Track every roll of a die in C: print as we go, store the history in an array, tally frequencies, and list which steps produced each face.
reading 1 post
- Reading Papers in the AI Age: A Hybrid Workflow2026-09-05
Why the best strategy for reading research today isn't AI summaries or full reads alone, but a 3-pass hybrid workflow that combines both.
recreational-math 1 post
- Be Impressive with Mathematics2026-04-23
A satirical note showing how \(1+1=2\) can be obscured using complex identities to appear more impressive for academic reviewers.
regression 2 posts
- Poisson Regression: A Simple Example2026-01-02
Poisson regression is a statistical model for analyzing count data (e.g., number of events, calls, clicks) that occur in a fixed interval, using the Poisson distribution.
- Interaction Effect in Regression Analysis2025-11-19
An **interaction effect** means the effect of one variable on the outcome depends on the level of another variable.
reisub 1 post
- How to Recover a Frozen Linux Desktop2026-09-09
Two escalating fixes for a hung Linux graphical session, from restarting the display manager over TTY to a safe REISUB reboot.
remainder 1 post
- Modulus vs. Remainder: Why -5 % 3 Isn't the Same Everywhere2026-09-24
Modulus and remainder agree for positive numbers but diverge for negative ones. A walkthrough of the truncated vs. floored division rules behind C, Python, and R's % and %% operators.
research 2 posts
- The Best Order to Write a Research Paper2026-09-11
Why writing a paper top-to-bottom causes writer's block, and the inside-out sequence experienced researchers use instead.
- Reading Papers in the AI Age: A Hybrid Workflow2026-09-05
Why the best strategy for reading research today isn't AI summaries or full reads alone, but a 3-pass hybrid workflow that combines both.
reticulate 1 post
- How to Run Python Inside RStudio with reticulate2026-08-18
Set up RStudio to run Python code alongside R — configure the interpreter, install reticulate, and use three different workflows (scripts, mixed Quarto/R Markdown chunks, and calling Python from R directly).
reveal-js 1 post
- What's New in qdraw: Shapes, Pages, and a Smarter Eraser2026-08-29
A tour of the latest qdraw features — a Quarto reveal.js extension for drawing and annotating directly on slides during a live presentation.
rstudio 1 post
- How to Run Python Inside RStudio with reticulate2026-08-18
Set up RStudio to run Python code alongside R — configure the interpreter, install reticulate, and use three different workflows (scripts, mixed Quarto/R Markdown chunks, and calling Python from R directly).
sarima 1 post
- ARIMA and SARIMA Time Series Models2025-10-06
A **clear, concise explanation** of **ARIMA**, **SARIMA**, and related models — followed by **minimal R examples**..
sarimax 2 posts
- Interpretation of an Auto SARIMAX model output in R2024-03-16
A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.
- SARIMAX Time Series Models with R Code2024-01-20
A **clear, concise explanation** of **ARIMA**, **SARIMA**, and related models — followed by **minimal R examples**..
scanf 1 post
- The do-while Loop in C: Run First, Check After2026-07-16
How C's do-while loop works: the body always runs at least once before the condition is tested. Two PIN-entry examples, plus do-while vs while and common pitfalls.
shell 1 post
- The Ultimate Guide to Making Fish Your Default Shell2026-09-07
How to install Fish and set it as your default shell on Ubuntu, Fedora, Arch, and Pop!_OS — including the terminal-profile workaround GNOME-based distros need.
slides 1 post
- What's New in qdraw: Shapes, Pages, and a Smarter Eraser2026-08-29
A tour of the latest qdraw features — a Quarto reveal.js extension for drawing and annotating directly on slides during a live presentation.
spatial-statistics 1 post
- Spatio-temporal Analysis Workflow2025-09-10
A learning roadmap for spatio-temporal analysis, from spatial statistics foundations to R/Python tooling, datasets, and open-source contribution paths.
spatio-temporal 1 post
- Spatio-temporal Analysis Workflow2025-09-10
A learning roadmap for spatio-temporal analysis, from spatial statistics foundations to R/Python tooling, datasets, and open-source contribution paths.
standard-deviation 1 post
- Why Dispersion Matters as Much as Central Tendency2026-09-09
The mean or median only tells half the story — measures of spread like variance, standard deviation, and IQR reveal risk and consistency that averages hide.
standardization 1 post
- Z-score: What it is and what it does2025-11-19
A **z-score** (also known as a **standard score** or **z-value**) measures how many standard deviations a data point is from the mean of a distribution. It's a way of standardizing individual data points so they can be compared, regardless of the scale of the data.
statistical-modeling 1 post
- Interaction Effect in Regression Analysis2025-11-19
An **interaction effect** means the effect of one variable on the outcome depends on the level of another variable.
struct 1 post
- Structs in C: Grouping Related Data (with Python and R Comparisons)2026-08-20
How C structs group different types into one unit: student records, arrays of structs, points, linked-list nodes, typedef, ->, padding, and how structs compare with Python dicts and R lists.
svm 1 post
- SVM vs ANN: relative power, and usage guidelines2026-01-05
Here's a clear comparison of SVM vs ANN, their relative power, and usage guidelines.
switch 1 post
- The switch Statement in C: Syntax, break, Fall-Through and Examples2026-09-26
How C's switch statement works: matching cases, break, default, deliberate fall-through, grouped cases, chars and enums, and when to choose switch over if / else if.
syntax-comparison 1 post
- if-else in C, Python and R: Syntax Compared Side by Side2026-09-21
The same if / else if / else written in C, Python and R, with a comparison table, the R 'else on a new line' trap, truthiness rules, and R's vectorized ifelse().
t-test 1 post
- From t-test to Anova2025-10-10
Let’s build this step by step, starting from a **t-test** and then showing how it generalizes naturally into **ANOVA** (Analysis of Variance).
terminal 1 post
- The Ultimate Guide to Making Fish Your Default Shell2026-09-07
How to install Fish and set it as your default shell on Ubuntu, Fedora, Arch, and Pop!_OS — including the terminal-profile workaround GNOME-based distros need.
time-series 5 posts
- ARIMA and SARIMA Time Series Models2025-10-06
A **clear, concise explanation** of **ARIMA**, **SARIMA**, and related models — followed by **minimal R examples**..
- Spatio-temporal Analysis Workflow2025-09-10
A learning roadmap for spatio-temporal analysis, from spatial statistics foundations to R/Python tooling, datasets, and open-source contribution paths.
- Interpretation of an Auto SARIMAX model output in R2024-03-16
A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.
- AutoRegressive and Moving Average Time Series Models with R Code2024-02-23
A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.
- SARIMAX Time Series Models with R Code2024-01-20
A **clear, concise explanation** of **ARIMA**, **SARIMA**, and related models — followed by **minimal R examples**..
troubleshooting 1 post
- How to Recover a Frozen Linux Desktop2026-09-09
Two escalating fixes for a hung Linux graphical session, from restarting the display manager over TTY to a safe REISUB reboot.
typedef 1 post
- Structs in C: Grouping Related Data (with Python and R Comparisons)2026-08-20
How C structs group different types into one unit: student records, arrays of structs, points, linked-list nodes, typedef, ->, padding, and how structs compare with Python dicts and R lists.
usb 1 post
- How to Reset a Bootable USB Drive Using the Linux Command Line2026-06-02
A step-by-step guide to safely wiping a bootable Linux live USB and converting it back into a standard storage drive.
variance 1 post
- Why Dispersion Matters as Much as Central Tendency2026-09-09
The mean or median only tells half the story — measures of spread like variance, standard deviation, and IQR reveal risk and consistency that averages hide.
visualization 1 post
- clockplot: Plot Event Times on a 24-Hour Clock2025-08-30
The announcement of the clockplot package.
workflow 1 post
- R Package Development Workflow2025-08-29
The Workflow that you may follow while developing your own R package.
writing 1 post
- The Best Order to Write a Research Paper2026-09-11
Why writing a paper top-to-bottom causes writer's block, and the inside-out sequence experienced researchers use instead.
xrf 1 post
- Micro-XRF: super-powered, non-destructive chemical camera2025-12-20
Micro-XRF is the super-powered, non-destructive chemical and super-sleuth chemical Camera.
z-score 1 post
- Z-score: What it is and what it does2025-11-19
A **z-score** (also known as a **standard score** or **z-value**) measures how many standard deviations a data point is from the mean of a distribution. It's a way of standardizing individual data points so they can be compared, regardless of the scale of the data.