Stat Mania

SVM vs ANN: relative power, and usage guidelines

Here’s a clear comparison of SVM vs ANN, their relative power, and usage guidelines.

Abdullah Al Mahmud

Poisson Regression: A Simple Example

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.

Abdullah Al Mahmud

Hyperspectral Imaging Explained

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…

Abdullah Al Mahmud

Understanding Mass Spectrometry Imaging

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…

Abdullah Al Mahmud

Micro-XRF: super-powered, non-destructive chemical camera

Micro-XRF is the super-powered, non-destructive chemical and super-sleuth chemical Camera.

Abdullah Al Mahmud

Interaction Effect in Regression Analysis

An interaction effect means the effect of one variable on the outcome depends on the level of another variable.

Abdullah Al Mahmud

Z-score: What it is and what it does

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…

Abdullah Al Mahmud

A/B Testing: A Sample Analysis

A/B Testing– A Sample Analysis. Scenario– Testing a new button color.

Abdullah Al Mahmud

IQR in Statistics

The Interquartile Range (IQR) is a measure of statistical dispersion that describes the spread of the middle 50% of data.

Abdullah Al Mahmud

From t-test to Anova

Let’s build this step by step, starting from a t-test and then showing how it generalizes naturally into ANOVA (Analysis of Variance).

Abdullah Al Mahmud

ARIMA and SARIMA Time Series Models

A clear, concise explanation of ARIMA, SARIMA, and related models — followed by minimal R examples..

Abdullah Al Mahmud

Spatio-temporal Analysis Workflow

The announcement of the clockplot package.

Abdullah Al Mahmud

clockplot: Plot Event Times on a 24-Hour Clock

The announcement of the clockplot package.

Abdullah Al Mahmud

R Package Development Workflow

The Workflow that you may follow while developing your own R package.

Abdullah Al Mahmud

CRAN Package Submission Checklist

A comprehensive checklist for a smooth R package submission to CRAN.

Abdullah Al Mahmud

Interpretation of an Auto SARIMAX model output in R

A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.

Abdullah Al Mahmud

AutoRegressive and Moving Average Time Series Models with R Code

A comprehensive explanation of AR (AutoRegressive) and MA (Moving Average) models and their parameters.

Abdullah Al Mahmud

SARIMAX Time Series Models with R Code

A clear, concise explanation of ARIMA, SARIMA, and related models — followed by minimal R examples..

Abdullah Al Mahmud