-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Hank Stevens
Sent: Monday, March 31, 2003 2:43 PM
To: [EMAIL PROTECTED]
Subject: [R] power.t.test
power.t.test() requires a standard deviation as input, but for
a two sample
test, I do not understand
[EMAIL PROTECTED] writes:
Hi - Is it possible to use the power.t.test function in a scenario where the
number of observations in each group is different?
No. It's not rocket science to modify the p.body expression, though.
The tricky bit is what to do instead of solve for n.
--
O__
[EMAIL PROTECTED] writes:
Hi - Is it possible to use the power.t.test function in a scenario where the
number of observations in each group is different?
No. It's not rocket science to modify the p.body expression, though.
The tricky bit is what to do instead of solve for n.
One
