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Question 2: Consider the following sample of 8 observations on X and Y: X: 18 12...

Question 2: Consider the following sample of 8 observations on X and Y:

X: 18 12 15 21 18 22 16 19
Y: 45 38 39 65 42 58 51 61

(a) Determine the coefficients (i.e., the a and b values) of the regression equation .

(b) Now suppose each of the eight observations represents a part-time salesperson in a retail store. For each individual, X Is equal to the number of hours worked last week, while Y is equal to the number of sales made last week. Interpret the values of the coefficients a and b.

Math   Statistics-And-Probability   
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