When Comparing More Than Two Treatment Means, Why Should You

Multiple Choice

When comparing more than two treatment means, why should you use an analysis of variance instead of using several t tests?

A) Using several t tests increases the risk of a Type I error.
B) Using several t tests increases the risk of a Type II error.
C) The analysis of variance is more likely to detect a treatment effect.
D) There is no advantage to using an analysis of variance instead of several t tests.