Free Cochran Q Test Calculator

Test equality of proportions across related groups.

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Cochran Q

-24.0000

df3

Cochran Q vs Treatments

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Cochran Q Test

Q = (k-1)[k*Sum(Cj^2) - T^2] / [kT - Sum(Ri^2)]

Extension of McNemar to 3+ related groups with binary outcomes.

Example Calculation

4 treatments, T=40.

  1. 01Q = 3*(2000-1600)/(160-210)

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