Assignment:
1.) Sales of industrial vacuum cleaners at Abog Supply Co. over the past 13 months are as follows:
|
Sales($1,000s)
|
Month
|
Sales($1,000s)
|
Month
|
|
11
|
January
|
14
|
August
|
|
14
|
February
|
17
|
September
|
|
16
|
March
|
12
|
October
|
|
10
|
April
|
14
|
November
|
|
15
|
May
|
16
|
December
|
|
17
|
June
|
11
|
January
|
|
11
|
July
|
|
|
(a) Using a moving average with three periods, determine the demand for vacuum cleaners for next February.
(b) Using a weighted moving average with three periods, determine the demand for vacuum cleaners for February. Use 3, 2, and 1 for the weights of the most recent, second most recent, and third most recent periods, respectively.
(c) Evaluate the accuracy of each of these methods.