Which of the following statements is not true about the F-test in one-way analysis of variance?
A) The F-statistic can never be a negative number.
B) The numerator degrees of freedom = number of groups in the study - 1
C) The denominator degrees of freedom = total sample size - number of groups.
D) An F-distribution is a symmetric distribution.

Question

Quizplus · Accepted Answer

The F-distribution is not symmetric; it is skewed to the right. The F-statistic, used in analysis of variance (ANOVA), compares the variance between groups to the variance within groups, and its distribution is inherently right-skewed, especially with small sample sizes or a large number of groups.

Which of the Following Statements Is Not True About the F-Test