Given the least-squares regression line = 5 -2x, what may be said about the relationship between the two variables?
A) The relationship between x and y is positive.
B) The relationship between x and y is negative.
C) As x increases, so does y.
D) As x decreases, so does y.

Question

Given the least-squares regression line  = 5 -2x, what may be said about the relationship between the two variables?
A) The relationship between x and y is positive. 
B) The relationship between x and y is negative. 
C) As x increases, so does y. 
D) As x decreases, so does y.

Quizplus · Accepted Answer

The negative slope (-2) indicates that as x increases, y decreases. Therefore, the relationship between x and y is negative.

Given the Least-Squares Regression Line = 5 -2x, What