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Marianne Kramer, the owner of Handy Man Rentals, rents carpet cleaners to contra

ID: 3356232 • Letter: M

Question

Marianne Kramer, the owner of Handy Man Rentals, rents carpet cleaners to contractors and walk-in customers. She is interested in arriving at a forecast of rentals so that she can order the correct quantities of supplies that go with the cleaners. Data for the last 10 weeks are shown here. 1. Week1 2 3 Rentals 19 20 31 10 15 5 17 27 18 18 31 a. Prepare a forecast for weeks 6 through 10 by using a 4-week moving average. (Enter your responses rounded to two decimal places.) Week 6 Forecast 10 What is the forecast for week 11? rentals. (Enter your response rounded to two decimal places.) rentals. (Enter your response rounded b. The mean absolute deviation as of the end of week 10 is to two decimal places.) 1: Definition Moving Average Forecast- The sum of demand across immediate past n-periods divided by the number of periods D+D-1+D-2n+1

Explanation / Answer

Answer:

MINITAB used

Moving Average

number of periods:

4

t

Rentals

4MA

1

19

2

20

3

31

4

17

21.75

5

27

23.75

6

18

23.25

7

18

20.00

8

31

23.50

9

11

19.50

10

15

18.75

Forecasts

Period

Forecast

Lower

Upper

11

18.75

3.03587

34.4641

Accuracy Measures

MAPE

43.2793

MAD

7.3750

MSD

64.2813

Moving Average

number of periods:

4

t

Rentals

4MA

1

19

2

20

3

31

4

17

21.75

5

27

23.75

6

18

23.25

7

18

20.00

8

31

23.50

9

11

19.50

10

15

18.75

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