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Dictionary

Goodman and Kruskal's tau (t)

a measure of the proportional increase in accurately predicting the outcome of one categorical variable when we have information about a second categorical variable where it is assumed that the predictions are based on the their overall proportions. We can illustrate this test with the data in Table G.1 (under the entry for Goodman and Kruskal's lambda) where we may be interested in finding out how much our ability to predict whether a person has passed or failed a test ...

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