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Experimental design, data analysis, and statistical tooling for modern teams. No hype, just the math.

StatsTest
RegressionJan 26New

Collinearity: When It Breaks Interpretation and What to Do

A practical guide to multicollinearity in regression. Learn when collinearity is a problem, how to detect it, and practical solutions that don't involve blindly dropping variables.

StatsTest
RegressionJan 26New

Linear Regression Assumptions and Diagnostics in Practice

A practical guide to checking linear regression assumptions with diagnostic plots. Learn what violations actually look like, when they matter, and what to do when assumptions fail.