Re: [R] relationship between t-test CI and SEM?

From: Rob Campbell <stats_at_robertcampbell.co.uk>
Date: Mon, 10 Mar 2008 09:39:55 -0400

Thanks for the replies and apologies for not including code. Bad of me.

>Chuck Cleland wrote:
>I get the same confidence intervals with t.test(), lm(), and by hand.
  >We need to see how you calculated the SEM and constructed the interval. >Perhaps you constructed the interval using the normal distribution >rather than the t distribution?

Yes, I was doing this and this was causing a confusion.

I think it's clear now!

Rob



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