Computing percentage of variance accounted by treatment

Reference no: EM1319207

Q1) Psychologist would like to study effects of new drug on activity level of animals. 3 samples of rats are chosen with n = 5 in each sample. One group gets no drug, one group gets small dose, and third group gets a large dose. Psychologist records activity level for each animal. Data from this experiment are presented below.

No drug	Small dose	Large dose
5	5	10
3	5	12
1	9	9	G = 90
1	6	6	ΣX² = 678
5	5	8
T = 15	T = 30	T = 45
SS = 16	SS = 12	SS = 20

a) Do these data point to any significant differences among three groups? Test with α = .05.-----------------and conclude that drug------------- a significant effect on activity level.
b) Calculate η², the percentage of variance accounted for by treatment.

Reference no: EM1319207

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