ANOVA interaction terms?

Thread View: sci.math.stat

1 messages

[T] Back to Threads [V] Tree View [G] Group Articles

1 total messages Started by Darrell Roy Hougen Tue, 27 Oct 1992 17:07

Author: Darrell Roy Hougen
Date: Tue, 27 Oct 1992 17:07

16 lines
1206 bytes

My wife is trying to do some ANOVA on her mouse tumor data using
SYSTAT.  The program automatically generates a model of the form

     F = Const. + A + B + A*B

However, the model can be changed by the user.  What I am wondering,
not knowing much about ANOVA, is what purpose does the A*B term serve?
My undergrad Stat. book doesn't say anything about such terms.  Could
anyone recommend one or more (so I have a chance of finding one) texts
on the subject?  Right now, the extra term looks pretty ad hoc.  Is
there a sound reason for using a term of that form?  Why not use A^2
and B^2 too?  That would be a complete second order model.

Thanks in advance.

Darrell

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads