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DSST Principles of Statistics Exam Prep

Category - DSST Statistics Free Test Prep

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State officials wish to study those factors that affect adherence to job rehabilitation after a job-related injury. The propose to study two particular factors: the extent of previous injury and the worker's educational level. What is this type of research design called?

  1. simple linear regression
  2. multiple regression
  3. ANOVA
  4. chi-square
Explanation

Answer: B - Multiple regression analysis is used to study the effect of two or more independent (or explanatory) variables on the dependent variable.

Key Takeaway: Multiple regression analysis is used to study the effect of two or more independent variables on the dependent variable. In this example, the extent of previous injury and the worker’s educational level are both independent variables that are hypothesized to affect the dependent variable (adherence to job rehabilitation).

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