For students and practitioners of econometrics, Principles of Econometrics provides a complete overview of the subject, serving as both an extensive introduction to the subject and as a reference volume. This comprehensive text delves fully into the empirical determination of economic laws, highlighting the mathematical principles and techniques that economists use to test and determine theories using real-world data. Starting with an overview of economic relations and moving through an array of mathematical and statistical tools, Principles of Economics is a complete resource.