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Wooldridge  Introductory Econometrics 2nd Edition Publisher: South-Western | 2002 | 819 pages | ASIN: B000MVF6SS | PDF | 4,1 mb Chapter 1 discusses the scope of econometrics and raises general issues that result from the application of econometric methods. Section 1.3 examines the kinds of data sets that are used in business, economics, and other social sciences. Section 1.4 provides an intuitive discussion of the difficulties associated with the inference of causality in the social sciences.