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Sales over the past 10 years are shown below. Using the method of least squares, calculate the values of a and b to complete this
Sales over the past 10 years are shown below. Using the method of least squares, calculate the values of a and b to complete this regression equation.
Year | Sales |
---|---|
1 | 1,640 |
2 | 1,850 |
3 | 1,240 |
4 | 1,250 |
5 | 1,980 |
6 | 1,400 |
7 | 1,060 |
8 | 1,430 |
9 | 1,050 |
10 | 1,990 |
Note: Indicate a negative answer using a "-" sign. Do not round intermediate calculations and round your answer to 3 decimal places.
Sales = ___ + (16.061) x
What is your forecast for next year's sales?
Note: Do not round intermediate calculations and round your answer to 2 decimal places.
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