The test statistic for goodness of fit has a chi-square distribution with k - 1 degrees of freedom provided that the expected frequencies for all categories are
A) 5 or more.
B) 10 or more.
C) k or more.
D) 2k.

Question

The test statistic for goodness of fit has a chi-square distribution with k - 1 degrees of freedom provided that the expected frequencies for all categories are​
A) ​5 or more.
B) ​10 or more.
C) ​k or more.
D) ​2k.

Quizplus · Accepted Answer

The chi-square distribution with k - 1 degrees of freedom is appropriate for the goodness of fit test when the expected frequency for each category is at least 5.

The Test Statistic for Goodness of Fit Has a Chi-Square