A researcher used ANOVA and computed an F ratio for the following data: Treatmen
ID: 3221330 • Letter: A
Question
A researcher used ANOVA and computed an F ratio for the following data:
Treatments
I II III
n=10 n=10 n=10
M=20 M=28 M=35
SS=105 SS=191 SS=180
a. If the mean for treatment III were changed to M=25, what would happen to the size of the F ratio (increase or decrease) Explain
b. If the SS for treatment I were changed to SS =1400, what would happen to the size of the F ratio (increase or decrease)?
Explain? I need help quick!!
Explanation / Answer
a. If the mean for treatment III were changed to M=25, what would happen to the size of the F ratio (increase or decrease) Explaina. If the mean for treatment III were changed to M=25, what would happen to the size of the F ratio (increase or decrease) Explain
Ans:
If the mean for treatment III were changed to M=25 ,it would reduce the size of the mean difference .This would reduce the size of MS between and would reduce the size of the F ratio
b. If the SS for treatment I were changed to SS =1400, what would happen to the size of the F ratio (increase or decrease)
Ans:
If the mean for treatment Iwere changed to SS=1400 ,it would increase the size of thevariability within treatments .This would increase MS within and would reduce the size of the F ratio
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