¥ANOVA:
Which level had an effect?
Hwhich
treatment means (mi) are 0 ?
åi.e. is the response to drug dose 3
different from 0?
åt-statistic
with option -mean in 3dANOVA
åEquivalent to using 3dttest -base1 0
when there are only 2 levels
with
same sample sizeHwhich treatment means are different from
each other ?
åi.e. is the response to drug dose 2
different from the response to dose 3 ?
åt-statistic
with option -diff in 3dANOVA
åEquivalent to using 3dttest
(unpaired) when there are only 2 levels
with
same sample sizeHwhich linear combination of means
(contrasts) are 0 ?
åi.e. is the response to drug doses 1 and
2 different from the response to drug doses 3 and
4?
åt-statistic
with option -contr in 3dANOVA