more of the assumptions of the regression model will be violated in a specific empirical analysis, the ability to know when problems exist and when to take appropriate action helps to ensure the proper use of the procedure.The authors discuss: the consequences of violating the assumptions of the regression model; procedures for detecting when such violations occur; and strategies for dealing with these problems when they arise.The monograph was written without the use of matrix algebra, in order to make it more accessible. Notation used is consistent with SAGE's Applied Regression(QASS 22), and numerous examples are provided from political science, sociology, and economics.

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