Question

The Chi-square test involves a statistical comparison between observed and expected values. One generally determines degrees of freedom as

A) the number of classes being compared
B) one less the number of classes being compared
C) two less the number of classes being compared
D) the sum of the two categories
E) one more the number of classes being compared

Answer 1

The degrees of freedom for a Chi-square test of homogeneity is calculated using the formula: df = (number of columns - 1) * (number of rows - 1). For a five-by-two table, the degrees of freedom would be 4.

Step-by-step explanation:

The number of degrees of freedom for the Chi-square test of homogeneity is calculated using the formula:

df = (number of columns - 1) * (number of rows - 1)

So, for a five-by-two table, the degrees of freedom would be: df = (5 - 1) * (2 - 1) = 4 * 1 = 4.