Questions and Answers
What does correlation analysis investigate?
The level of association of two variables
What is the main purpose of simple regression?
To test the effect of a single predictor on the outcome
What does multiple regression examine?
The magnitude of the unique effects of each predictor on the outcome
What is the main purpose of mediation analysis?
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What is the main purpose of moderation analysis?
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What is the difference between multiple regression and simple regression?
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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!
