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Quarterly Billing for Water Usage Is Shown Below

Question 46

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Quarterly billing for water usage is shown below.
​ Quarterly billing for water usage is shown below. ​ ​ a. Solve for the forecast equation that minimizes the sum of squared error. b. Forecast the summer of year 5 and spring of year 6. ​
a.
Solve for the forecast equation that minimizes the sum of squared error.
b.
Forecast the summer of year 5 and spring of year 6.

Correct Answer:

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​
a.Ȳt = 64.875 − 6.1375Qtr1t + ...

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