Medium
Assumptions Testing
Free
A researcher uses binary logistic regression to predict whether a customer renews a subscription (0 = no, 1 = yes) from (1) monthly usage hours and (2) customer age. Which assumption/check is MOST appropriate and specific to logistic regression (as opposed to standard linear regression)?
A
Check that residuals are normally distributed using a Normal P–P plot; if not, logistic regression is invalid.
B
Check linearity of the logit for continuous predictors (e.g., using a Box–Tidwell test or logit-linearity diagnostics).
C
Check that the dependent variable is measured on an interval scale so that odds ratios are meaningful.
D
Check homogeneity of variances across groups using Levene’s test.