When computing a chi-square goodness-of-fit test,the frequency expected in a given cell should never be less than ______.
A) the sample size
B) the number of cells
C) the frequency observed
D) five

Question

Quizplus · Accepted Answer

The general rule of thumb is that the expected frequency in each cell should be at least 5 for the chi-square goodness-of-fit test to be valid. This ensures that the sampling distribution of the test statistic is approximately chi-square and that the results are reliable. If the expected frequency is less than 5, the test may be inaccurate or even invalid, and alternative methods may need to be used. Therefore, option D is the correct answer.

When Computing a Chi-Square Goodness-Of-Fit Test,the Frequency Expected in a Given