MATH / TWO-SAMPLE STATISTICS
Compare two independent sample proportions under a pooled null model. Inspect the equation, substituted values, result, and interpretation limits in one guided workspace.
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Compare two independent sample proportions under a pooled null model. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
z=(p1-p2)/sqrt[p_c(1-p_c)(1/n1+1/n2)]
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Interpret the result only when sampling, independence, measurement, and distribution assumptions fit the data.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
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