zpl writes
> Could someone tell me what the main difference between Type
> II SS and Type III SS is, and how they can be used in testing
> hypothesis in linear regression. Thanks.
>
> Z.
I have a paper and two heavily annotated computer programs that
discuss the mathematical and functional aspects of SAS Type I,
II, and III sums of squares in unbalanced (and balanced) analysis
of variance (ANOVA). (SAS Type IV sums of squares are also briefly
discussed.)
This material does not discuss the use of the various types of sums
of squares in linear regression. However, since the types of sums
of squares originated in analysis of variance, the material may
still be of interest.
The material is available at
http://www.matstat.com/ss/
-------------------------------------------------------
Donald B. Macnaughton MatStat Research Consulting Inc
[EMAIL PROTECTED] Toronto, Canada
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.
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