Probit model for work
-------- True --------
Classified | D ~D | Total
-----------+--------------------------+-----------
+ | 1177 361 | 1538
- | 166 296 | 462
-----------+--------------------------+-----------
Total | 1343 657 | 2000
Classified + if predicted Pr(D) >= .5
True D defined as work != 0
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Sensitivity Pr( +| D) 87.64%
Specificity Pr( -|~D) 45.05%
Positive predictive value Pr( D| +) 76.53%
Negative predictive value Pr(~D| -) 64.07%
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False + rate for true ~D Pr( +|~D) 54.95%
False - rate for true D Pr( -| D) 12.36%
False + rate for classified + Pr(~D| +) 23.47%
False - rate for classified - Pr( D| -) 35.93%
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Correctly classified 73.65%
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