Calcolatore Test di McNemar

Esegui il test di McNemar per dati nominali appaiati in tabelle 2×2.

McNemar chi-sq (continuity)

4.0500

McNemar chi-sq (no continuity)5.0000
Total Discordant20

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

Vedi formula →

Formula

McNemar Test

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

For paired binary outcomes. Only discordant pairs matter.

Esempio Risolto

b=15, c=5.

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

Domande Frequenti

When?

Paired binary data like before/after.

Why only discordant?

Concordant pairs give no info about change.

Small samples?

Use exact binomial if b+c < 25.

Impara

Understanding the Normal Distribution

Calcolatrici Correlate

Fisher Exact

Exact 2x2 test.

Wilcoxon

Paired non-parametric.

Chi-Square GoF

Goodness of fit.