Title: analogy for pearson r statistics for binary classification task
Tags: statistics;correlation
Question: I am trying to get idea how variables of my data correspond to target variable (binary class).
In regression, Pearson r statistic is quite good to get sense of variables relationship. Also I can use it for classification, treating classes 0 and 1 as real values but it's a risky trick.
My question: is there any equivalent statistic saying which variable is good for classification task ? Thanks
Comment: Do I understand you correctly, that you want to put some number on the strength of the relationship between a binary variable and some other variable (continuous, nominal, ordinal, binary)? And that, if the relationship is *strong*, you wanna use the other variable to predict the binary variable? I guess it is, in any case, important to specify what kind of variable the other variable is



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