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

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Two-Group ComparisonsJan 26New

Welch's T-Test vs. Student's T-Test: Why You Should Always Use Welch's

A definitive comparison of Welch's and Student's t-tests. Learn why the equal variance assumption fails in practice and why Welch's should be your default.