(Steps Shown) Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and
Question: Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following sample information. The X-column indicates the number of client contacts last month, and the Y-column shows the value of sales ($ thou-sands) last month for each client sampled.
|
Number of contacts
X |
Sales ($ thousands)
Y |
Number of contacts
X |
Sales ($ thousands)
Y |
| 14 | 24 | 23 | 30 |
| 12 | 14 | 48 | 90 |
| 20 | 28 | 50 | 85 |
| 16 | 30 | 55 | 120 |
| 46 | 80 | 50 | 110 |
- Determine the regression equation.
- Determine the estimated sales if 40 contacts are made.
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