Re: interaction term in linear regression with a dummy coded predictor

Ray...

You wrote "but to stop trying to interpret the so-called "main
effect" coefficients as if they were anova overall main effects,
and to start looking at the correct overall effect statistics.
For a more complete discussion,"

I don't understand this. In science and engineering it's common to
build models from data. It's also common to interpret the meaning of
those models from the values of the "slopes", i.e., the linear
regression coefficients.

What do you mean by "the correct overall effect statistics"?
If you mean the ANOVA table, that table is almost useless when we need
to values and signs of the model coefficients. OMU

Am I missing something.


.

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