Question 628167: A manager wishes to determine the relationship between 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. Find the equation of the regression line for the given data. Predict the value of sales when the sales representative travel 8 miles. Predict the value of sales when tthe sales representative traveled 11 miles.
Miles Traveled, x 2,3,10,7,8,15,3,1,11
Sales, y 31,33,78,62,65,61,48,55,120
Answer by ewatrrr(24785)   (Show Source):
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Hi,
Miles Traveled, x: 2, 3,10,7, 8, 15,3, 1, 11 mean = 6.67
Sales, y: 31,33,78,62,65,61,48,55,120 mean = 61.4
Re: www.alcula.com/calculators/statistics/linear-regression/
Regression line equation: 
a = and 
y = 3.53x + 37.9
when x = 8 ⇒ y = 66.15
when x = 11 ⇒ y = 76.74
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