Statistics in Correlation and Regression Analysis
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Statistics in Correlation and Regression Analysis

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@emilyroseblack

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Questions and Answers

What does correlation analysis investigate?

  • The level of association of two variables (correct)
  • The magnitude of the effects of the predictor on the outcome
  • The magnitude of the effects of all predictors taken together on the outcome
  • The effects of the predictor on the outcome that are exerted both directly and indirectly
  • What is the main purpose of simple regression?

  • To test the effect of a single predictor on the outcome (correct)
  • To examine the level of association of two variables
  • To test the effect of multiple predictors on the outcome
  • To test the magnitude of the effects of the predictor on the outcome
  • What does multiple regression examine?

  • The level of association of two variables
  • The magnitude of the effects of the predictor on the outcome
  • The effect of the predictor on the outcome that are exerted both directly and indirectly
  • The magnitude of the unique effects of each predictor on the outcome (correct)
  • What is the main purpose of mediation analysis?

    <p>To test the effect of the predictor on the outcome that are exerted both directly and indirectly</p> Signup and view all the answers

    What is the main purpose of moderation analysis?

    <p>To test the magnitude of the effect of the predictor on the outcome as a function of variations in the values of a third variable</p> Signup and view all the answers

    What is the difference between multiple regression and simple regression?

    <p>The number of predictors used</p> Signup and view all the answers

    Study Notes

    Correlation Analysis

    • Investigates the level of association between two variables
    • Examines the extent to which two variables change together

    Simple Regression

    • Tests a model that uses a single predictor to predict values of an outcome
    • Examines the magnitude of the effect of the predictor on the outcome

    Multiple Regression

    • Tests a model that uses more than one predictor to predict values of an outcome
    • Examines the magnitude of the unique effects of each predictor on the outcome
    • Examines the magnitude of the effects of all predictors taken together on the outcome

    Mediation Analysis

    • Tests a model where the predictor has effects on the outcome both directly and indirectly via a mediating variable
    • Examines the simplest mediation model, with more complex models possible but not covered in this module

    Moderation Analysis

    • Tests a model where the magnitude of the effect of the predictor on the outcome varies based on variations in the values of a third variable (moderator)

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    Description

    This quiz covers correlation analysis, simple regression, and multiple regression, exploring the relationships between variables and predictors. Test your knowledge of statistical models and analysis!

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