Find Karl Pearson's coefficient of correlation between the age and playing habit of the people from the following information : Age group (years) No. of people No. of players 15 and less than 20 200 150 20 and less than 25 270 162 25 and less than 30 240 170 30 and less than 35 360 180 35 and less than 40 400 180 40 and less than 45 300 120 Interpret the calculated value of r.

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