Making Predictions from a Least-Squares Regression Line
Question 1 of 10 • CA-Statistics and Probability A
A sports-equipment researcher was interested in the relationship between the speed of a golf club (in feet per second) and the distance a golf ball travels (in yards). Information was collected on several golfers and was used to obtain the regression equation ŷ = 2x - 106, where x represents the club speed and ŷ is the predicted distance. Which statement best describes the meaning of the slope of the regression line?
Answer
A
For each increase in distance by 1 yard, the predicted club speed increases by 2 ft/sec.
B
For each increase in distance by 1 yard, the predicted club speed decreases by 106 ft/sec.
C
For each increase in club speed by 1 ft/sec, the predicted distance increases by 2 yards.
D
For each increase in club speed by 1 ft/sec, the predicted distance decreases by 106 yards.