Soccer enthusiasts have long debated how to decide tournament games in which the score is a tie but a winner must be determined. If the game is allowed to continue until one team scores a deciding goal, this team may be too tired to play well in the next round; yet other criteria (such as a succession of penalty kicks) seem arbitrary.

Some have argued that a team’s dominance can be measured by the number of corner kicks it is awarded during the game. To test this theory, a student estimated this equation using data from 17 games played by a college men’s soccer team. Write a paragraph summarizing his results.

Y is equal to the number of goals by this team minus the number of goals by the opposing team (average value 0.59), X is equal to the number of corner kicks by this team minus the number of corner kicks by the opposing team (average value = 1.06), and the standard errors are in parentheses.

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Y= 0.376 +0.200X, R2 = 0.147 (0.594) (0.125)