Hi,
how can I change the significance level in test F to select
variable in step command?
I used
step(model0, ~x1+x2+x3+x4, direction=c("forward"), test='F',
alpha=.05)
but it does't work.
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Silvano Cesar da Costa
Departamento de Estatística
Universidade Estadual de Londrina
Fone: 3371-4346