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Consider the quarterly electricity production for years 1-4: Year 1      2         3            4 Q1   99   120&nbs

Consider the quarterly electricity production for years 1-4:

Year 1      2         3            4
Q1   99   120     139        160
Q2   88   108     127        148
Q3   93   111     131        150
Q4 111   130     152        170

(a) Using a classical additive decomposition, calculate the seasonal component.
(b) Explain how you handled the end points.
(c)  Estimate the trend using a centered moving average.

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milcah answered 1 year ago
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