Assignment:
Q: Given below are the monthly demand for a product.
|
Month
|
Demand
|
Month
|
Demand
|
Month
|
Demand
|
|
1
|
487
|
13
|
528
|
25
|
517
|
|
2
|
602
|
14
|
622
|
26
|
595
|
|
3
|
551
|
15
|
608
|
27
|
619
|
|
4
|
587
|
16
|
592
|
28
|
602
|
|
5
|
509
|
17
|
536
|
29
|
545
|
|
6
|
457
|
18
|
504
|
30
|
486
|
|
7
|
349
|
19
|
461
|
31
|
431
|
|
8
|
386
|
20
|
391
|
32
|
416
|
|
9
|
490
|
21
|
437
|
33
|
444
|
|
10
|
507
|
22
|
503
|
34
|
492
|
|
11
|
516
|
23
|
562
|
35
|
538
|
|
12
|
573
|
24
|
570
|
36
|
575
|
a. Compute the 3-month moving average of this demand. Does this series still show seasonal variation?
b. Compute the 6- and 12-month moving averages of this demand.
c. Plot the original data and the three moving averages.