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Multiple Regression: Refining the Model

This item is included in the following series/curriculum: Statistically Speaking  

  • Grade Level: Senior High (10-12)-Adult
  • Subjects: Business mathematics
  • Produced By: Coast Learning Systems
  • Year: 2011
  • Country: United States
  • Language: English
  • Running Time: 30m
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This lesson further examines multiple regression by closely examining the predictor variables involved in the regression model. Researchers often want to simplify a multiple regression to focus on just a few variables, or even on a single variable. There are several reasons why they might do this. One is that they may not have the resources to continuously measure all of the explanatory variables. Or they may want to focus on one or two explanatory variables that are the best predictors of the response variable. In this lesson, you will learn how researchers determine which predictor(s) to keep and which ones to discard as they build a more refined model.

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