Nina Zumel recently gave a very clear explanation of logistic regression ( The Simpler Derivation of Logistic Regression ). In particular she called out the central role of log-odds ratios and demonstrated how the “deviance” (that mysterious quantity reported by fitting packages) is both a term in “the pseudo-R^2″ (so directly measures goodness of fit) [...] Related posts: The Simpler Derivation of Logistic Regression Learn Logistic Regression (and beyond) Large…
