Free McNemar Test Calculator

Test for paired nominal data in a 2x2 table.

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McNemar chi-sq (continuity)

4.0500

McNemar chi-sq (no continuity)5.0000
Total Discordant20

McNemar chi-sq (continuity) vs Discordant b (+ then -)

View formula & how it works →

McNemar Test

chi2 = (b-c-1)^2 / (b+c)

For paired binary outcomes. Only discordant pairs matter.

Example Calculation

b=15, c=5.

  1. 01chi2 = 81/20 = 4.05
  2. 02df=1, significant at 0.05

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