A sports analyst is interested in the relationship between the number of three-point shots players attempt in a game and the number of points scored. To investigate the relationship, he collects a simple random sample of 15 games and records the number of three-point shots attempted and the total number of points scored. He finds the equation of the least-squares regression line to be ŷ = 65.7 + 0.729x, where ŷ is points scored and x is the number of three-point shots attempted. The residual plot is shown.