OPMAN CHAP 4

0.0(0)
studied byStudied by 0 people
0.0(0)
full-widthCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/7

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

8 Terms

1
New cards

weighted moving average

sum(wt*dt)/sum(wt)

wt = weight for the t-th period

dt = demand for the t-th period

2
New cards

exponential smoothing

Ft=Ft-1+α(At-1-Ft-1)

3
New cards

Mean Absolute Deviation (MAD)

Mad = Sum(abs(actual-forecast)) / n

4
New cards

Mean Squared Error (MSE)

MSE = sum(actual-forecast)2 / n

5
New cards

Mean Absolute Percent Error (MAPE)

MAPE = sum(abs(actual-forecast)/actual) / n

6
New cards

Tracking Signal

TS = Sum(E)/MAD

E = error

7
New cards

standard error of the estimate

sy,x = sqrt(sum(y-yhat)2 / (n-2)

8
New cards

Exponential Smoothing With Trend Adjustment

Ft = α*At-1 + (1-α)*(Ft-1 + Tt-1)


FITt-1 = (Ft-1 + Tt-1)


Tt = β(Ft-Ft-1) + (1 - β)*Tt-1

T = trend

F = forecast