Data Set 11-5: $$\begin{array} { r r c } \text { Group A } & \text { Group B } & \text { Group C } \ \hline8 & 13 & 15 \ 10 & 15 & 17 \end{array}$$ -Descriptions for Groups A, B, and C in Data Set 11-5 follow. For which would the ANOVA described in Chapter 11 not be appropriate? A) 10 mg, 20 mg, and 100 mg of a new drug, 6 rats B) Yale, Princeton, and Harvard, 6 students C) before, after, and three months later, 2 rats D) all of the descriptive alternatives are correct.

Question

Quizplus · Accepted Answer

ANOVA is not appropriate for repeated measures data like "before, after, and three months later" on the same subjects (rats), as it violates the assumption of independence.

Data Set 11-5 Group A Group B Group C 81315101517\begin{array} { r r c } \text { Group A } & \text { Group B } & \text { Group C } \\\hline8 & 13 & 15 \\10 & 15 & 17\end{array} Group A 810​ Group B 1315​ Group C 1517​​

Data Set 11-5 $\begin{array} { r r c } \text { Group A } & \text { Group B } & \text { Group C } \\\hline8 & 13 & 15 \\10 & 15 & 17\end{array}$