Question: Question: Quarterly billing for water usage is shown below. Quarter Winter Spring Summer Fall 1 64 103 152 73 Year 2 3 66 68 103

Question: Quarterly billing for water usage is

Question: Quarterly billing for water usage is shown below. Quarter Winter Spring Summer Fall 1 64 103 152 73 Year 2 3 66 68 103 104 160 162 72 78 4 73 120 176 88 a. Find the seasonal index for each quarter. b. Deseasonalize the data. Find the trend line. d. Assume there is no cyclical component and forecast the summer billing for year 5. C

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