This preview shows page 1. Sign up to view the full content.
Unformatted text preview: forecasting models. Problem 18-6
The following tabulations are ac tual s ales of units for s ix months and a s tarting forec as t in J anuary . ACTUAL J anuary February Marc h April May J une FORECAST 104 100 123 92 79 100 84 a. Calc ulate forec as ts for the remaining fiv e months us ing s imple ex ponential s moothing with α = 0.3. February Marc h April May J une Forec as ts
93 b. Calc ulate the MAD for all the forec as ts , inc luding J anuary 's . (Round your answer to 1 decim al place.) MA D 16.2 ± 0.1 Explanation:
a. Ft+1 = Ft + α(At − Ft), α = 0.3 Demand
Forec as t J anuary
104 84 February
100 90 Marc h
123 93 April
92 102 May
79 99 J une
100 93 Total Abs olute
20 10 30 10 20 7 97 b. Mean abs olute dev iation (MAD) = 97/6 = 16.2 http://e z to.mhe c loud.mc gr a w- hill.c om/hm.tpx? todo= pr intvie w 7/10 1/29/2014 6. Assignme nt Pr int Vie w awar d: 0.50 out of
0.50 points Problem 18-8
Ac tual demand for a produc t for the pas t three months was Three months ago Two months ago Las t m...
View Full Document
This note was uploaded on 01/29/2014 for the course MAN 4504 taught by Professor Georgekyparisis during the Fall '09 term at FIU.
- Fall '09