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The Concept of a Decision Calculus. Parameter Estimation and Model Testing. The work is empirically based and is supported by the best research from both the professional and academic fields. Unlike many other methodologies, ETS research in marketing has stood the test of time. Econometric and time series analysis ETS is one of the few areas in marketing where there is little, if any, conflict between the academic sphere and the world of professional practice. The definitive source of research news and opinion.
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