If the regression line is $y$=-3$x$ + 4 , which of the following must hold true?
A) The variables have a strong correlation.
B) The variables have a negative association.
C) The scatterplot shows a linear trend.
D) All of the above.

Question

Quizplus · Accepted Answer

A) The strength of correlation cannot be determined based solely on the equation of the regression line. 
B) The negative coefficient on the x-variable indicates a negative association between x and y. 
C) The fact that there is a regression line implies that there is a linear trend in the scatterplot. 
D) While C is true, it is not necessarily true that the correlation is "strong" based on this information, so D is not the best answer.

If the Regression Line Is yyy =-3 xxx + 4 , Which of the Following Must Hold True

If the Regression Line Is $y$ =-3 $x$ + 4 , Which of the Following Must Hold True