A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.$\begin{array} { c c c c }
\hline \text { LOH } & \text { EAM } & \text { WLK } & \text { LOC } \
\hline 14 & 11 & 10 & 25 \
19 & 15 & 5 & 18 \
12 & 9 & 6 & 24 \
9 & 19 & 11 & 29 \
14 & 12 & 4 & 17 \
15 & 10 & 5 & 20 \
18 & 20 & 4 & 23 \
8 & 8 & 3 & 27 \
\hline
\end{array}$
-One way to determine the effect size in ANOVA is
A)omega-squared
B)F squared
C)alpha-squared
D)beta-squared

Question

A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.$\begin{array} { c c c c } 
\hline \text { LOH } & \text { EAM } & \text { WLK } & \text { LOC } \
\hline 14 & 11 & 10 & 25 \
19 & 15 & 5 & 18 \
12 & 9 & 6 & 24 \
9 & 19 & 11 & 29 \
14 & 12 & 4 & 17 \
15 & 10 & 5 & 20 \
18 & 20 & 4 & 23 \
8 & 8 & 3 & 27 \
\hline
\end{array}$
-One way to determine the effect size in ANOVA is
A)omega-squared
B)F squared
C)alpha-squared
D)beta-squared

Quizplus · Accepted Answer

Omega-squared is a measure of effect size used in ANOVA to estimate the proportion of variance in the dependent variable that is attributable to the independent variable(s).

A Psychologist Wishes to Determine Which of Four Diet Plans