Each effect has n a-1 degrees of freedom, assuming a complete combination. Thus, for the example, each effect has two degrees of freedom. The procedure compares nested values to data values on the ...

A design structure matrix (DSM) is a visual analysis tool used for system modeling. Simple and concise, it uses an NxN square matrix to represent the relationships between N system elements.

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An output data set containing the design matrix is created whenever you specify the OUTDESIGN= option in the PROC GLMMOD statement. The OUTDESIGN= data set contains an observation for each observation ...