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adventuresome
2008 Oct 09
1
adjusted t-test with unequal variance
....values[data$group==1]
lmtest$fitted.values[data$group==0]
basically this delivers just the same means and p.value like the test
with equal variance.
and here's where my problem is...:
checking bartletts test and the var.test i found that the assumption
of equal variance might be at least venturesome for some of my
variables...
Can I replace the lmtest by something else, assuming variances are not
equal ? I read about a quasi option of glm on the mailing lists...
Thx in advance for any suggestions