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Mathematics 7 Online
OpenStudy (anonymous):

6. The correlation coefficient r between the age of a car, x, and the car’s mileage, y, is 0.768. What percent of the variation in mileage cannot be explained by differences in the cars’ ages? (Points : 4)

OpenStudy (anonymous):

23.2% 41.0% 59.0% 76.8%

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