The operations manager of a musical instrument distributor feels that demand for bass drums may be related to the number of television appearances by the popular rock group Green Shades during the preceding month. The manager has collected the data shown in the following table:

DEMAND FOR GREEN SHADES

BASS DRUMS TV APPEARANCE

3 ..............3

6 ..............4

7 ..............7

5 ..............6

10 .............8

8 ..............5

(a) Graph these data to see whether a linear equation might describe the relationship between the group's television shows and bass drum sales.

(b) Using the equations presented in this chapter, compute the SST, SSE, and SSR. Find the least squares regression line for these data.

(c) What is your estimate for bass drum sales if the Green Shades performed on TV six times last month?