At 11:45 AM 6/1/2010, Kourosh Ks wrote:
Dears
When normality test violate and sample size is large(n=400) can I
use t-test?
best gards kourosh
Generally "yes", unless there is something really pathological about
the distribution.
You should note that, for n = 400, even the simplest
distribution-free tests should have near perfect power, so which test
you use is not important.
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