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In a sample of 21 observations obtained it was found that sales and price have an inverse relationship and coefficient of determination is 106% as much as the adjusted coefficient of determination. It is also known that the variance of sales around mean is 640. What is the coefficient of correlation?

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Im not sure how all the information fits together. I know coefficient of determination is SSR/SST, but i dont have any of that information

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Im not sure how all the information fits together. I know coefficient of determination is SSR/SST, but i dont have any of that information

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