Question

Explain what a correlation coefficient (r-value) is and how we can use it to help us interpret a scatter plot. To earn full credit be sure to address the full range of possible values for the r-value and their meaning.

Answer 1

Step-by-step explanation:

The correlation coefficient: It is a statistical measure which represents the strength of the relationship between the relative movements of two variables.

It is denoted as r. It ranges between -1 to 1.

The correlation between two variables can be positive or negative.

Example:

The correlation of r=0.9 represents the strong positive connection between two variables.

The correlation of r= -0.2 denotes the weak negative connection.

The correlation represents