Re: two sample t

2001-02-26 Thread Jay Warner
dennis roberts wrote: > when we do a 2 sample t test ... where we are estimating the > population variances ... in the context of comparing means ... the > test statistic ... > > diff in means / standard error of differences ... is not exactly like > a t distribution with n1-1 + n2-1 degree

Re: two sample t

2001-02-26 Thread Rich Ulrich
On 26 Feb 2001 12:26:19 -0800, [EMAIL PROTECTED] (dennis roberts) wrote: > when we do a 2 sample t test ... where we are estimating the population > variances ... in the context of comparing means ... the test statistic ... > > diff in means / standard error of differences ... is not exactly li

two sample t

2001-02-26 Thread dennis roberts
when we do a 2 sample t test ... where we are estimating the population variances ... in the context of comparing means ... the test statistic ... diff in means / standard error of differences ... is not exactly like a t distribution with n1-1 + n2-1 degrees of freedom (without using the term