Data Analysis

How are QQ Plots Created?

Creating one from scratch.

Feb 18 • Akshay Pachaar

Euclidean Distance vs. Mahalanobis Distance

Euclidean distance is not always useful.

Nov 27, 2025 • Avi Chawla

11 Types of Variables in a Dataset

Beyond features, targets, etc.

Apr 23, 2025 • Avi Chawla

NumPy Cheat Sheet for Data Scientists

40 Methods used 95% of the time.

Apr 17, 2025 • Avi Chawla

25 Most Important Mathematical Definitions in DS

...in a single frame.

Apr 11, 2025 • Avi Chawla

11 Most Important DS Plots

...summarized visually.

Apr 2, 2025 • Avi Chawla

How are QQ Plots Created?

Creating one from scratch.

Mar 20, 2025 • Avi Chawla

Ridgeline Plots to Depict Multiple Distributions

Search trends of 2024.

Dec 23, 2024 • Avi Chawla

How to Create a Calendar Plot in Python?

A richer alternative to line plot.

Nov 29, 2024 • Avi Chawla

The No-code Data Science Tool Stack

8 powerful no-code data science tools in a single frame.

Nov 26, 2024 • Avi Chawla

How to Assess Correlation on Ordinal Data?

The problem with Pearson correlation.

Nov 15, 2024 • Avi Chawla

Avoid Using PCA for Visualization Unless

...this plot says so.

Nov 7, 2024 • Avi Chawla

#nojs-banner { position: fixed; bottom: 0; left: 0; padding: 16px 16px 16px 32px; width: 100%; box-sizing: border-box; background: red; color: white; font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; font-size: 13px; line-height: 13px; } #nojs-banner a { color: inherit; text-decoration: underline; } This site requires JavaScript to run correctly. Please turn on JavaScript or unblock scripts