At 12:09 AM 3/5/01 -0500, Donald Burrill wrote:
>Well, no. Overrated it may be (that lies, I think, in the eye of the
>beholder); but a _decision_ it is definitely not. Power is the
>_probability_ of making a particular decision -- which, of course, like
>all decisions, may or may not be correct.
sorry .... we don't MAKE this decision ... the only decision we make in
this case is to reject the null ... it is only the statisticians
who overlay onTOP of this ... the consequence OF that reject decision ...
saying that IF the null had been false (of which the S has no clue about)
... THEN the consequence of that reject decision is called power
this is one reason i raised this issue ... because, we only make 2 possible
decisions with respect to our investigation ... we retain ... we reject ...
we DON'T determine the consequence of that decision ... so, in this sense
... saying that there is a consequence associated with a particular act ...
retaining or rejecting ... "power is the probability of MAKING (emphasis
added from don's comment) ... a particular decision ... " ... sounds like
WE did this ... when we did NOT DO this
all we did was to reject the null
i still think there would be value ... in:
1. making it clear that the S only makes decisions of the retain kind ...
and reject kind ... that's it!
2. it would be helpful to identify both correct decisions (oops ...
unbeknownst outcomes) ... just like we identify both incorrect decisions
(oops .. unbeknownst outcomes) ... and then give some symbol to the
probability associated with each of the "cells" ... which is distinct from
the name we have given to the cell
> -- Don.
> ----------------------------------------------------------------------
> Donald F. Burrill [EMAIL PROTECTED]
> 348 Hyde Hall, Plymouth State College, [EMAIL PROTECTED]
> MSC #29, Plymouth, NH 03264 (603) 535-2597
> Department of Mathematics, Boston University [EMAIL PROTECTED]
> 111 Cummington Street, room 261, Boston, MA 02215 (617) 353-5288
> 184 Nashua Road, Bedford, NH 03110 (603) 471-7128
==============================================================
dennis roberts, penn state university
educational psychology, 8148632401
http://roberts.ed.psu.edu/users/droberts/drober~1.htm
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