Interaction

I thought addition was commutative. I am puzzled by your question.
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Sent from my phone. Please excuse my brevity.

Hi,

I'm fitting a model with 3 variables: A, B and SNP.
The response variable is Y.

I would like fit the following model, in this order:

Y ~ A + B + A*B + SNP

In general, the R sets of the form:

Y ~ A + B + SNP + A*B

How do this?


---------------------------------------------
Silvano Cesar da Costa

Universidade Estadual de Londrina
Centro de Ci?ncias Exatas
Departamento de Estat?stica

Fone: (43) 3371-4346

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