Correlation

Table Of Contents

Manual
- Getting Started
  - Starting the Program
  - Retrieving Data
  - Manipulating Data
  - Saving and Re-running Actions
    - Reviewing and accessing the code
    - Saving and re-running statistical models
- Sampling
- Procedures
  - Measurement Models
  - MML Models for Test Data
  - Other Available Procedures
- Graphics
- Tools
  - Estimation Methods
  - Optimization Techniques
  - Variance Estimation
- Post-hoc Procedures
- More user input instructions
  - The User Interface
    - Completed Run Queue
    - The Variable List
  - Input Instructions
  - Options
  - Output Precision
- Glossary of Terms and Symbols

Correlation

The Correlation procedure estimates Pearson's product-moment correlation between variables. The correlation, which varies between minus one and one, is a measure of the linear relationship between a pair of variables.

The population correlation is estimated from sample data as

Where 's are the sample weights, 's represent the estimated population means and 's are the estimated population variances.

There are two ways to access the correlation procedure:

Select Statistics|Basic Statistics|Correlations from the main menu. Then use the displayed dialog exactly as in the Descriptive procedure, or
Run the Descriptive procedure. When it is completed, right-click on the icon representing that run in the Completed Run Queue. One option on that menu is "Correlations." Selecting that option will cause the correlations to be displayed.