Hello,
does someone could tell me what is the best way to perform an analysis of
covariance.
I try :
summary(glm(y ~ Group * x, data=SDF1))
I obtain the following results:
Coefficients:
Value Std. Error t value
(Intercept) 58.714096 10.900908 5.3861657
Group1 13.723168 13.096083 1.0478835
Group2 -13.982561 7.852430 -1.7806666
x 2.114921 1.164596 1.8160129
Group1x -1.347520 1.440343 -0.9355554
Group2x 1.419042 0.815325 1.7404613
but I would like to have a p-value for the global group effect, how can I
obtain it?
Thanks in advance,
Annaële Sanquer
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