One way analysis of variance-anova

Reference no: EM1315964

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	4	4	3
5	6	4	4
6	5	3	4
6	4	5	3
5	5	4	3

The summary table is as follows:

Source	Sum of Squares	df	Mean Square	F
Between groups	9.75	3	3.250	5.91
Within groups	8.80	16	0.550
Total	18.55	19

What are the independent variable and the dependent variables?
Should Katie conduct a between-subject ANOVA or a within-subject ANOVA? Explain your answer.
How many factors are involved in Katie's study?
How many levels are involved? Name the level(s).
What are the null and alternate hypotheses?
Using a = 0.05, what is F_crit?
Is the F-test significant?
Based on your answer about significance, what else should you do and why?

Reference no: EM1315964

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