Weekly Bicycle sales at Bikeman's Bike Shop are shown below.

Week Actual Weekly Sales

1 8

2 10

3 9

4 11

5 10

6 13

7 -

a. Calculate a 3-week Weighted Moving Average using the following weights.

Weights applied: Period:

3 Last week

2 Two weeks ago

1 Three weeks ago

______________________________________________

6 Sum of weights

b. Compute the Mean Absolute Deviation (MAD) for forecast accuracy.

ALSO: If possible, can you upload a document showing me your work and how you come to the conclusion?