Interactive Statistics Studio

Rivu Basu PCA lab

Learn PCA by building it with your own hands. Draw or generate data, center and standardize it, inspect the covariance matrix, watch eigenvectors emerge, and compare the raw data space directly against the standardized analysis space in one shared view.

Points 0
Mode 2D
Status Collect Data
Step 1 / 6
0.35

Data Space + Analysis Space

Click or drag to spray raw points; analysis is overlaid after standardization
Raw observations Mean Standardized coordinates PC1 direction / score PC2 direction / score
Current Lesson

Step 1. Meet the raw data cloud

Start by making a dataset that has some shape. PCA is only interesting when there is structure to explain.

Live Metrics

Mean vector [0.000, 0.000]
Standard deviations [1.000, 1.000]
Covariance off-diagonal 0.000
Projection state Hidden

Explained Variance

PC1: 0.0%
PC2: 0.0%
PC3: 0.0%

Numerical Readout

Add points or load a preset to begin the tutorial.

PCA Walkthrough