Correlation and covariance measure
A) the strength of a linear relationship between two numerical variables
B) the direction of a linear relationship between two numerical variables
C) the strength and direction of a linear relationship between two numerical variables
D) the strength and direction of a linear relationship between two categorical variables
E) none of these options

Question

Quizplus · Accepted Answer

Correlation and covariance measure both the strength and direction of a linear relationship between two numerical variables. Correlation measures the strength of the relationship on a scale from -1 to 1, while covariance measures the strength of the relationship in terms of how much the variables vary together.

Correlation and Covariance Measure