Although I do not have the source, I have heard Type III error described as
rejecting the null and concluding that there is an effect in one direction,
when, in fact, the effect is, in the population, in the opposite direction.
Assuming that a nondirectional test was employed, the null is false, thus
this error is not a Type I error.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++++ Karl L. Wuensch, Department of Psychology, East Carolina University,
Greenville NC 27858-4353 Voice: 252-328-4102 Fax: 252-328-6283
[EMAIL PROTECTED] http://core.ecu.edu/psyc/wuenschk/klw.htm
----- Original Message -----
kj0 <[EMAIL PROTECTED]> wrote:
>
>
> >What is a type III statistical error?
> >(I know about types I and II).
> >Thanks,
>
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