>
> Hi,
>
> Can the overall standard error of difference (given in the .pvs file for
> predicted means) be used for pair wise comparison of means to determine the
> significance of the differences between the levels of a fixed effect and if
> so how?? Is there a need to estimate SE of difference for each pair under
> comparison by taking into consideration the number of records for each level.
>
> Thanks in advance
>
> Kishore
>
If predicted values have more or less the same accuracy, then the
average SED is used to construct a t statisic
(mu_1 - mu_2 ) / SED
You can get the whole matrix of SED's mu using the !SED qualifier
predict treat !sed
Then you can use the individual SED's for each particular contrast.
Arthur
>
>
> *********************************************************
> Dr.Kishore C. Prayaga
> CSIRO Livestock Industries
> Locked bag 1
> Armidale
> NSW 2350 Australia
> Ph: (02) 6776 1379 / (02) 6776 1420
> Fax: (02) 6776 1371
> e-mail: Kishore.Prayaga@li.csiro.au
> *********************************************************
>
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Arthur Gilmour PhD mailto:Arthur.Gilmour@agric.nsw.gov.au
Principal Research Scientist (Biometrics) fax: <61> 2 6391 3899
NSW Agriculture <61> 2 6391 3922
Orange Agricultural Institute telephone work: <61> 2 6391 3815
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