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Basic Analysis and Graphing - SAS

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Chapter 7 Performing Simple Logistic Regression 233<br />

Statistical Details for the Logistic Platform<br />

Figure 7.11 Inverse Prediction Window<br />

Figure 7.12 Example of Inverse Prediction Plot<br />

The estimates of the x values <strong>and</strong> the confidence intervals are shown in the report as well as in the<br />

probability plot. For example, the value of ln(Dose) that results in a 90% probability of being cured is<br />

estimated to be between -0.526 <strong>and</strong> 0.783.<br />

Statistical Details for the Logistic Platform<br />

Statistical Details for the Whole Model Test Report<br />

Chi-Square<br />

The Chi-Square statistic is sometimes denoted G 2 <strong>and</strong> is written as follows:<br />

G 2 = 2( –lnp( background)<br />

– –ln p( model)<br />

)

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