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The Basics of Multiple Regression

1 The Basics of Multiple The BasicsEducation is not the only factor that affects pay. As shown in Figure , even forworkers with the same education, there is remarkable variation in wages. Surely, some of thisvariation is due to work experience, unionization, industry, occupation, region, anddemographics, such as gender, race, marital status, etc. These easily can be accounted for usingmultiple example, one could think of wages as a function of education and work experience: Wage=f(Education,Experience).The longer one spends on a job, the better one gets. If people are paid for their productivity, thenworkers with more work experience should be more productive, and therefore, paid more.

where wages are measured in natural logs. This is a multiple regression model of wages. Because there is more than one explanatory variable, each parameter is interpreted as a partial derivative, or the change in the dependent variable for a change in the explanatory variable, holding all other variables constant. For example,

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math.dartmouth.edu

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www.asc.ohio-state.edu

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www.cs.toronto.edu

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www.columbia.edu

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www.ams.sunysb.edu

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