11.1 Introduction11.2 Error and Deviation Measures11.3 Risk Envelopes and Risk Identifiers11.4 Error Decomposition in Regression11.5 Least-Squares Linear Regression11.6 Median Regression11.7 Quantile Regression and Mixed Quantile Regression11.8 Special Types of Linear Regression11.9 Robust RegressionReferences, Further Reading, and Bibliography