An electrical contractors records during the last five weeks indicate the number of job requests.

Predict the number of requests for week 6 using each of these methods.

Nave forecast method for period 6

A four-period moving average period 6

Weighted Moving (40%, 30%, 20%, 10%)

Exponential smoothing with a smoothing factor of 0.15

Week	Requests (actual demand)	Forecast
1	20	19
2	22	25
3	18	21
4	21	18
5	22	20
6