AP PSYCHOLOGY

Detailed explanation-1: -The correlation coefficient is measured on a scale that varies from + 1 through 0 to – 1. Complete correlation between two variables is expressed by either + 1 or-1. When one variable increases as the other increases the correlation is positive; when one decreases as the other increases it is negative.

Detailed explanation-2: -Correlation is a statistical measure (expressed as a number) that describes the size and direction of a relationship between two or more variables.

Detailed explanation-3: -Linear Correlation Coefficient. The linear correlation coefficient is a number calculated from given data that measures the strength of the linear relationship between two variables: x and y. The sign of the linear correlation coefficient indicates the direction of the linear relationship between x and y.