A correlation coefficient is a numerical value indicating the degree and direction of the relationship between two variables.

A correlation coefficient can range from +1.00 (a perfect positive correlation) to .00 (no correlation) to –1.00 (a perfect negative correlation).

The number in a correlation coefficient indicates the relative strength of a relationship between two variables-the higher the number, the stronger the relationship.

The sign of a correlation coefficient (+ or -) indicates whether the two variables vary in the same or opposite directions.