Machine derived contents note: Simple Linear Regression. -- Detection and Correction of Model Violations: Simple Linear Regression. -- Multiple Regression Model. -- Qualitative Variables as Regressors. -- Weighted Least Squares. -- The Problem of Correlated Errors. -- Analysis of Collinear Data. -- Biased Estimation of Regression Coefficients. -- Selection of Variables in a Regression Equation. -- Selected Problems. -- Statistical Tables. -- Index