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growrate
2001 Oct 16
4
two way ANOVA with unequal sample sizes
...2 1
1.7 2 1
2.5 2 2
1.8 2 2
2 2 2
0.7 3 1
1.1 3 1
0.5 3 2
0.9 3 2
1.3 3 2
expected results are
source of variation SS df MS F
gender 0.12 1 0.12 0.74
bone development 4.1897 2 2.0949 12.89**
interaction 0.0754 2 0.377 0.23
Error 1.3 8 0.1625
# I use
aov (growrate ~ gender * bonedevelopment)->m
summary(m)
Df Sum Sq Mean Sq F value Pr(>F)
as.factor(gender) 2 4.3063 2.1531 13.2501
0.002891 **
as.factor(bonedevlopment) 1 0.0926 0.0926 0.5697
0.472022
as.factor(gender:bonedevlopme...