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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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676 GLM: Multivariate<br />

• Dependent variables not appearing in the MMATRIX subcommand will have a row of zeros<br />

in the M matrix.<br />

• A number can be specified as a fraction with a positive denominator—for example, 1/3<br />

or –1/3, but 1/–3 is invalid.<br />

• The number of columns must be greater than 0. You can specify as many columns as you<br />

need.<br />

• If more than one MMATRIX subcommand is specified, only the last one is in effect.<br />

Example<br />

GLM Y1 Y2 Y3 BY A B<br />

/MMATRIX = “Y1–Y2” Y1 1 Y2 –1; “Y1–Y3” Y1 1 Y3 –1<br />

“Y2–Y3” Y2 1 Y3 –1<br />

/DESIGN.<br />

• In the above example, Y1, Y2, and Y3 are the dependent variables.<br />

• The MMATRIX subcommand requests all pairwise comparisons among the dependent<br />

variables.<br />

• Since LMATRIX was not specified, the L matrix is defined by the estimable function for<br />

the intercept effect.

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