In chi-square tests, there is a rule known as Rule of Five, which requires that:
A) observed frequency for each cell be five or more
B) degrees of freedom for the test be at least five
C) expected frequency for each cell be five or more
D) difference between the observed and expected frequency for each cell be at least five
E) expected frequency for each cell be different than five

Question

Quizplus · Accepted Answer

The Rule of Five requires that the expected frequency for each cell be five or more. This is to ensure that the assumptions of the chi-square test are met, specifically the assumption that the expected cell count should not be too low (less than 5) in more than 20% of the cells.

In Chi-Square Tests, There Is a Rule Known as Rule