WEEK 1 4 7 8 9. 10 11 12 CALLS 50 35 25 40 45 35 20 30 35 20 15 40 WEEK 13 14 15 16 17 18 19 20 21 22 23 24 CALLS 55 35 25 55 55 40 35 60 75 50 40 65 6. 3.

Calls to a dispatching emergency centre for the past 24 weeks are shown in the below table:

a- Use a 3-weighted moving average, with weights in descending order from recent to oldest
with w1=2w2, w2=2w3
b- Find the MAD and MAPE of part a
c- Plot the table and give at least three observations from the plot.

Extracted text: WEEK 1 4 7 8 9. 10 11 12 CALLS 50 35 25 40 45 35 20 30 35 20 15 40 WEEK 13 14 15 16 17 18 19 20 21 22 23 24 CALLS 55 35 25 55 55 40 35 60 75 50 40 65 6. 3.