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# Statistics in Correlation and Regression Analysis

Created by
@emilyroseblack

### 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?

<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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