onsider the following gasoline sales time series data. Click on the datafile logo to reference the data. Week.           Sales (1000s of gallons) 1                    16 2.                   22 3.                  18 4.                  23 5.                  18 6.                  17 7                   21 8                   17 9                   21 10.                21 11                  14 12                  23

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Consider the following gasoline sales time series data. Click on the datafile logo to reference the data.

Week.           Sales (1000s of gallons)

1                    16

2.                   22

3.                  18

4.                  23

5.                  18

6.                  17

7                   21

8                   17

9                   21

10.                21

11                  14

12                  23

Using a weight of 1/2 for the most recent observation, 1/3 for the second most recent observation, and  third the most recent observation, 1/6 compute a three-week weighted moving average for the time series (to 2 decimals). Enter negative values as negative numbers.

 


Week

Time-Series Value
Weighted Moving
Average Forecast
Forecast
Error
 
(Error)2
             
             
             
             
             
             
             
             
             
             
             
             
          Total  

 

b. Compute the MSE for the weighted moving average in part (a).
MSE =  

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