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

Chi-Square Test of Independence
Goodness of FitDec 5New

Chi-Square Test of Independence

The Chi-Square Test of Independence is a test used to determine if the proportions of categories in two group variables differ from each other.

Two Proportion Z-Test
Goodness of FitDec 5New

Two Proportion Z-Test

The Two-Proportion Z-Test is a test used to determine if the proportions of categories in two group variables differ from each other.

One-Proportion Z-Test
Goodness of FitDec 4New

One-Proportion Z-Test

The One-Proportion Z-Test is used to determine if the proportions of categories in a single qualitative variable differ from an expected proportion.