Normality: when it matters and when it does not

QQ plot for 2 features; write when normality is (and is not) required. Concepts: Normality assumptions; QQ plots; tests vs plots Project A: QQ plots of credit_amount before/after log (your probplot cell). Normality is not required for tree or logistic models. Project B: QQ plot of load residuals after removing the daily pattern (preview of regression diagnostics).