Jerry Sam owns and operates a chain of 12 department stores in New Ville. Sales figures and advertising expenses for the stores are provided in the table below. Sales are given in millions of dollars; advertising expenses are in tens of thousands of dollars. Store Advertising Sales 1 14 6 2 11 3 3 15 5 4 16 5 5 24 15 6 28 18 7 22 17 8 21 12 9 26 15 10 43 20 11 34 14 12 9 5 i. Calculate the slope for the regression line. (Show all working)
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- Jerry Sam owns and operates a chain of 12 department stores in New Ville. Sales figures and advertising expenses for the stores are provided in the table below. Sales are given in millions of dollars; advertising expenses are in tens of thousands of dollars.
Store |
Advertising |
Sales |
1 |
14 |
6 |
2 |
11 |
3 |
3 |
15 |
5 |
4 |
16 |
5 |
5 |
24 |
15 |
6 |
28 |
18 |
7 |
22 |
17 |
8 |
21 |
12 |
9 |
26 |
15 |
10 |
43 |
20 |
11 |
34 |
14 |
12 |
9 |
5 |
i. Calculate the slope for the regression line. (Show all working).
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