(Answered) : Page 135, Prob 25(a through c) – naïve,, moving average, exponential smoothing Page 134, Prob 14 –, MAD, MSE Page 138

Page 135, Prob 25(a through c) – naïve,, moving average, exponential smoothing

Page 134, Prob 14 –, MAD, MSE

Page 138, Prob 31 data – use the first column (year 1)

A) compute a -3-month moving average (.4, .4, .2) through the new January .

B) Compute an exponential smoothing forecast to the new January. Start with a forecast of 70 for the first January and an alpha of 0.2

C) compare your two forecasts (over just the appropriate months) using both MSE and MAD

PROBLEM 25
PERIOD Student appointments
4 weeks ago 95
3 weeks ago 80
2 weeks ago 65
Last week 50
Problem 14
errors
4
8
-3
find: MSE=
MAD=
Problem 31 data
Month Year 1
January 75
February 48
March 35
April 22
May 2
June 3
July 28
August 145
September 181
October 190
November 100
December 81
January

Expert Answer

(25)

Naive method –

Ft+1 =

OR

 

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OR

 

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