Posted on by Judy

Please answer the following question correctly: An electrical contractor’s records during the last five weeks indicate the number of job requests: Week: 1 2 3 4 5 Requests: 23 25 23 24 25 Predict the number of requests for week 6 using each of these methods: a. Naive. Number of requests J b. A four-period moving average. (Round your answer to 2 decimal places.) Number of requests c. Exponential smoothing with a = .25. Use 23 for week 2 forecast. (Round your intermediate forecast values and final answer to 2 decimal places.) Number of Requests

Answer A;- Naïve
Number of requests:- 25
Reason:- In Naïve method, the forecasted value of next period is taken similar to the actual value of last period.
Answer B:- A four period moving average:-
Number of requests:- (25+23+24+25)/4=24.25
Answer C:- Exponential smoothing forecasting = Ft = Ft-1 +α(At-1-Ft-1)
Week
Requests
Forecast
1
23
2
25
23
3
23
23.5
4
24
23.38
5
25
23.54
Ft = Ft-1 +α(At-1-Ft-1)
For third week:- Ft =23+0.25(25-23)=23.5
For fourth week:- Ft =23.5+0.25(23-23.5)=23.38
For fifth week:- =23.38+0.25(24-23.38)=23.54
For sixth week:- =23.54+0.25(25-23.54)=23.91
Week
Forecast
2
23
3
23.5
4
23.38
5
23.54
6
23.91
 
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