For the following time series, you are given the moving average forecast.
Time Period
Time Series Value
Moving Average Forecast
1
25
2
18
3
17
4
28
20
5
12
21
6
23
19
7
18
21
?
The mean squared error equals
A. 42.5.
B. 20.25.
C. 170.
D. 0.
Answer: C
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