The National Football League has performed a study in which the total yards gained by teams in games was used as an independent variable to explain the variation in total points scored by teams during games. The points scored ranged from 0 to 57 and the yards gained ranged from 187 to 569. The following regression model was determined: = 12.3 + .12x Given this model, which of the following statements is true?
A) The average points scored for teams who gain zero yards during a game is -12.3 points.
B) The average yards gained will increase by .12 for every additional point scored.
C) The average change in points scored for each increase of one yard will be 0.12
D) The average number of points scored per game is 12.3

Question

Quizplus · Accepted Answer

The coefficient .12 in the regression equation = 12.3 + .12x represents the average change in the dependent variable (points scored) for each one-unit increase in the independent variable (yards gained), which in this case is 0.12 points per yard.

The National Football League Has Performed a Study in Which