On Mon, 09 Apr 2001 10:44:40 -0400, Paige Miller
<[EMAIL PROTECTED]> wrote:
> "Andrew L." wrote:
> >
> > I am trying to learn what a t-test will actually tell me, in simple terms.
> > Dennis Roberts and Paige Miller, have helped alot, but i still dont quite
> > understand the significance.
> >
> > Andy L
>
> A t-test compares a mean to a specific value...or two means to each
> other...
[ ... ]
I remember my estimation classes, where the comparison was
always to ZERO for means. To ONE, I guess, for ratios.
Technically speaking, or writing.
For instance, if the difference in averages X1, X2 is expected to
be zero, then "{(X1-X2) -0 }" ... is distributed as t . It might
look like a lot of equations with the 'minus zero' seemingly tacked
on, but I consider this to be good form. It formalizes as
<term> minus <Expectation of term>
--
Rich Ulrich, [EMAIL PROTECTED]
http://www.pitt.edu/~wpilib/index.html
=================================================================
Instructions for joining and leaving this list and remarks about
the problem of INAPPROPRIATE MESSAGES are available at
http://jse.stat.ncsu.edu/
=================================================================
