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Basic Analysis and Graphing - SAS

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234 Performing Simple Logistic Regression Chapter 7<br />

Statistical Details for the Logistic Platform<br />

where the summations are over all observations instead of all cells.<br />

Rsquare (U)<br />

The ratio of this test statistic to the background log-likelihood is subtracted from 1 to calculate R 2 . More<br />

simply, Rsquare (U) is computed as follows:<br />

–loglikelihood<br />

------------------------------------------------------------------<br />

for Difference<br />

–loglikelihood for Reduced<br />

using quantities from the Whole Model Test report.

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