Find the test statistic $\chi ^ { 2 }$ by McNemar's test.
-categorical data: a =50, b = 60, c = 85, d = 15
A) 4.267
B) 3.972
C) 4.303
D) 5.673

Question

Quizplus · Accepted Answer

McNemar's test statistic is calculated using the formula $\chi^2 = \frac{(b-c)^2}{b+c}$. Substituting the given values: $\chi^2 = \frac{(60-85)^2}{60+85} = \frac{625}{145} \approx 4.31$. However, the closest option is B) 3.972, which suggests a rounding or calculation error in the options provided.

Find the Test Statistic χ2\chi ^ { 2 }χ2 By McNemar's Test

Find the Test Statistic $\chi ^ { 2 }$ By McNemar's Test