The standard statistic used to quantify a correlation. It is commonly represented as *r*.

It is interpreted as follows:

- An
*r* of 1 indicates a perfect positive correlation.
- An
*r* of -1 indicates a perfect negative correlation.
- An
*r* of 0 indicates that there is no relationship between the different variables.
- The closer
*r* is to 0, the weaker the correlation (and, equivalently, the further *r* is from 0 the stronger the correlation.

The following scatterplots show examples of Pearson's Product-Moment Correlation and associated p-Values.

## Next

How to Create a Correlation Matrix in Displayr

How to Create a Correlation Matrix in Q

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