In article <[EMAIL PROTECTED]>,
jim clark <[EMAIL PROTECTED]> wrote:
>Hi
>On 13 Sep 2001, Rolf Dalin wrote:
>> Hi, this is about Jim Clark's reply to dennis roberts.
.................
>Sometimes I think that people are looking for some "magic
>bullet" in statistics (i.e., significance, effect size,
>whatever) that is going to avoid all of the problems and
>misinterpretations that arise from existing practices. I think
>that is a naive belief and that we need to teach how to use all
>of the tools wisely because all of the tools are prone to abuse
>and misinterpretation.
This is what all those who have only taken methods courses,
or in fact not studied it from a decision approach CAN do.
The discussion of significance, confidence intervals, etc.,
ignores some aspects of the value of the decision, or else
ignores some of the states of nature. The decision approach
needs to be used with care, as the user's assumptions affect
the decision taken, and this cannot be ignored; in some cases,
the effects of some of the assumptions are small enough that
they are not of much importance, but few users know which.
--
This address is for information only. I do not claim that these views
are those of the Statistics Department or of Purdue University.
Herman Rubin, Dept. of Statistics, Purdue Univ., West Lafayette IN47907-1399
[EMAIL PROTECTED] Phone: (765)494-6054 FAX: (765)494-0558
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