A store manager is trying to explore the relationship between percentage fat content (Y) and price (X) of various dairy products. He finds that the coefficient of determination is 0.4624 and the estimated regression line is Y = 0.5 ? 0.02 X. The coefficient of correlation would be

1. 0.68
2. ? 0.68
3. ? 0.02
4. 0.4624

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