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Understanding & Interpreting Regression Analysis

Understanding & InterpretingRegression AnalysisOCTRI BERD Program28 November 2018 Interpreting Regression analysis1 Workshop overview Welcome What this workshop is not a first course in statistics for those who desire a fundamental under-standing of what to do, or not do. We assume Regression Analysis isthe appropriate tool for your problems and you ve seen it before a detailed review, development or extension of what is typically seen ina standard course on Regression Analysis What this workshop is an adjuvant or corrective therapy for the interpretation of key scientificquantities (estimators) obtained from Regression analyses we meanmeans(viewed through the lens of Regression coefficients) is narrow in scope.

Nov 28, 2018 · Preliminaries: ‘Simple’∗ Linear Regression • For regression, we model the average or expected value of Y as E(Y | X) = β0 + β1X • E[·] denotes the mean or expected value • β0 is the mean value of Y when X = 0 E(Y | X = 0) = β0 + β1(0) = β0. • β1 is the mean difference in Y for a unit difference in X

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