Centerville Bikes and Stuff (CBS) sells…

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Centerville Bikes and Stuff (CBS) sells motorcycles and accessories. The number of helmets sold by CBS per week for the past six weeks follows.

Week	1	2	3	4	5	6
Value	18	11	14	10	17	12

(b)

Develop the three-week moving average for this time series. (Round your answers to two decimal places.)

Week	Time Series Value	Forecast
1	18
2	11
3	14
4	10
5	17
6	12

Compute MSE. (Round your answer to two decimal places.)

MSE =

What is the forecast for week 7?

(c)Use ? = 0.2 to compute the exponential smoothing values for the time series.

Week	Time Series Value	Forecast
1	18
2	11
3	14
4	10
5	17
6	12

Compute MSE. (Round your answer to two decimal places.)

MSE =

What is the forecast for week 7? (Round your answer to two decimal places.)

(e)Use ? = 0.4 to compute the exponential smoothing values for the time series.

Week	Time Series Value	Forecast
1	18
2	11
3	14
4	10
5	17
6	12

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