HSC Together General Maths: Pearson's Correlation Coefficient

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# Pearson’s Correlation Coefficient

### What is Pearson’s Correlation Coefficient?

In QCE General Maths, Pearson’s Correlation Coefficient measures the strength of a linear association. In other words, when the points on the scatterplot line up in a straight line in there is a strong linear association.

Pearson’s Correlation Coefficient ‘r’ will always have a value between -1 and +1. The following videos will explain how to identify the coefficient and what that means.

### How do you identify the Correlation Coefficient?

The following two videos explain Pearson’s Correlation Coefficient in more detail and how to identify the relationship.

### Using a calculator to identify a correlation coefficient (Casio Calculator)

To find the exact number of the coefficient from a graph is impossible, fortunately, the calculator can do that for us! This video explains how to use your calculator to find the coefficient.

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