What is a correlation coefficient?

Revised on June 22, 2023. A correlation coefficient is a number between -1 and 1 that tells you the strength and direction of a relationship between variables. In other words, it reflects how similar the measurements of two or more variables are across a dataset. When one variable changes, the other variables change in the same direction.

Where can I find a correlation coefficient?

It’s available at Amazon and other retailers. Loading... Correlation coefficients measure the strength of the relationship between two variables. Pearson’s correlation coefficient is the most common.

What is Pearson correlation coefficient?

This correlation coefficient is a single number that measures both the strength and direction of the linear relationship between two continuous variables. Values can range from -1 to +1. The greater the absolute value of the Pearson correlation coefficient, the stronger the relationship.