MATH / STATISTICAL INFERENCE
Estimate an unpooled confidence interval for the difference between two proportions. Review the equation, substituted values, result, assumptions, and interpretation in one guided workspace.
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Estimate an unpooled confidence interval for the difference between two proportions. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
(p1-p2)+/-z*sqrt[p1(1-p1)/n1+p2(1-p2)/n2]
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Use one consistent dataset or scale and verify statistical or geometric assumptions before interpretation.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
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