Question

A number ranging from +1.00 and -1.00 expresses the direction and strength of the relationship between two variables is called the:

a. Correlation coefficient
b. Linear regression
c. Hypothesis testing
d. Standard deviation

Answer 1

The number ranging from +1.00 to -1.00 that expresses the direction and strength of the relationship between two variables is called the correlation coefficient.

Step-by-step explanation:

The number ranging from +1.00 to -1.00 that expresses the direction and strength of the relationship between two variables is called the correlation coefficient (a).The sign (+/-) of the correlation coefficient indicates the direction of the relationship. A positive correlation means the variables move in the same direction, while a negative correlation means they move in opposite directions.The standard deviation (d) is a measure of the spread or variability of the data, and not specifically related to the direction and strength of the relationship between variables.