Question

Consider the following sample of 8 observations on X and Y: X: 18 12 15 21...

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

  1. (a) Determine the coefficients (i.e., the a and b values) of the regression equation Y = a + bX.

  2. (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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