A psychologist would like to examine the effects of sugar consumption on the activity level of preschool children. Three samples of children are selected with n = 6 in each sample. One group gets no sugar, one group gets a small dose, and the third group gets a large dose. The psychologist records the activity level for each child. The data from this experiment are presented below. a. Clearly state the findings of your analysis. Report p-value. b. Compute η2 , the percentage of variance accounted for by the treatment. c. Test for the homogeneity of variance assumption. No sugar Small dose Large dose 5 7 5 3 3 8 6 6 7 G = 93 5 7 6 ΣX2 = 535 2 6 7 3 4 3 T = 24 T = 33 T =? SS = 12 SS = 13.5 SS =?
A psychologist would like to examine the effects of sugar consumption on the activity level of preschool children. Three samples of children are selected with n = 6 in each sample. One group gets no sugar, one group gets a small dose, and the third group gets a large dose. The psychologist records the activity level for each child. The data from this experiment are presented below.
a. Clearly state the findings of your analysis. Report p-value.
b. Compute η2 , the percentage of variance accounted for by the treatment.
c. Test for the homogeneity of variance assumption.
No sugar Small dose Large dose
5 7 5
3 3 8
6 6 7 G = 93
5 7 6 ΣX2 = 535
2 6 7
3 4 3
T = 24 T = 33 T =?
SS = 12 SS = 13.5 SS =?
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