Which of the following test statistics is useful for conducting Analysis of Variance (ANOVA)?
AF ✓ Correct
BT
CChi square
DZ
Correct answer: (A) F
Explanation
Analysis of variance uses the F test statistic to compare variances across groups.
The F ratio divides variance between groups by variance within groups.
The t statistic compares the means of only two groups, not several.
The chi-square statistic tests association between categorical variables.
The Z statistic serves large-sample tests when the population standard deviation is known.
A significant F shows at least one group mean differs, prompting post-hoc tests.
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