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Article #193

Two-factorial ANOVA with repeated measurements - example

#193
From: Karl
Date: Tue, 11 Nov 2003 12:07
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Hallo!

I want to reproduce a statistical example of a textbook (Bortz,
Statistik f�r Sozialwissenschaftler, p.412, 3. Auflage) with R and
have big difficulties doing this.

The example (two-factorial analysis of variance with repeated
measurements):

	Subject b1	b2	b3
al	1	56	52	48
al	2	57	54	46
al	3	55	51	51
al	4	58	51	50
al	5	54	53	46
a2	1	54	50	49
a2	2	53	49	48
a2	3	56	48	52
a2	4	52	52	50
a2	5	55	51	46
a3	1	57	49	50
a3	2	55	51	47
a3	3	56	48	51
a3	4	58	50	48
a3	5	58	46	52

The factors are A (a1,a2,a3) and B (b1,b2,b3); 5 subjects. Factor A is
kind of training (creativity) for the subjacts and factor B is before,
during and after training.

The results of the example:

Source	SS	df	sigma2	F
A	9.9	2	4.95	3.87
Subject in sample	15.4	12	1.28
between subjects	25.3	14
B	370.7	2	185.35	44.03 (**)
AxB	45.6	4	11.4	2.71
BxSubject	101.0	24	4.21
within subjects	517.3	30
Total	542.6	44

Does anybody know how to get these results in R?

Thanks!
Karl
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From: karlknoblich@yahoo.de (Karl)
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Subject: Two-factorial ANOVA with repeated measurements - example
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