Singles and Doubles Winning Percentage The following graph shows the winning percentages in singles matches and doubles matches for a sample of male professional tennis players. (Source: tennis.com) a. Based on this scatterplot, would you say there is a strong linear association between these two variables? b. Would the numerical value of the correlation between these two variables be close to negative one, positive one, or zero? Give a reason for your answer. c. Based on this graph, do you think one can accurately predict a professional tennis player's doubles winning percentage based on his singles winning percentage?

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