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Katie is studying aggression among adolescent girls. She believes that there is a relationship between the level of interaction a girl has with her mother and her level of aggression. She has identified 5 girls who fall into each of 4 interaction levels and has measured their aggression scores. Her data are given below.
No Interaction
Low Interaction
Moderate Interaction
High Interaction
4
3
5
6
The summary table is as follows:
Source
Sum of Squares
df
Mean Square
F
Between groups
9.75
3.250
5.91
Within groups
8.80
16
0.550
Total
18.55
19
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