The information below is the number of miles (in hundreds of miles) the manager’s sales representatives travel per month and the amount of sales (in thousands of dollars) per month.
? = 9
∑ ? = 49
∑ ? 2 = 363
∑ ? = 713
∑ ? 2 = 57803
∑ ?? = 6324
Calculate coefficient R, and find the equation of the regression line.
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