A chi-square goodness-of-fit-test is to be used to determine if a distribution is normally distributed.The data will be divided into "k" categories.Both the mean and standard deviation must be estimated.The degrees of freedom for this test would be:
A)k - 1
B)k - 2
C)k - 3
D)k - 4

Question

Quizplus · Accepted Answer

When estimating both the mean and standard deviation from the data, you lose 2 degrees of freedom. Therefore, the degrees of freedom for the chi-square goodness-of-fit test would be k - 3.

A Chi-Square Goodness-Of-Fit-Test Is to Be Used to Determine If