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Chris is employed by a resort and sells timeshares. The following table shows th

ID: 2946496 • Letter: C

Question

Chris is employed by a resort and sells timeshares. The following table shows the number of timeshare sales for Chris for each quarter over the past three years.

Period

Quarter

Sales

Period

Quarter

Sales

1

1

10

7

3

12

2

2

16

8

4

8

3

3

11

9

1

13

4

4

7

10

2

17

5

1

11

11

3

12

6

2

14

12

4

9

What is the sales forecast for Period 13 using multiplicative? decomposition? Round to one decimal place.

A.

14.9

B.

13.7

C.

14.3

D.

12.0

Period

Quarter

Sales

Period

Quarter

Sales

1

1

10

7

3

12

2

2

16

8

4

8

3

3

11

9

1

13

4

4

7

10

2

17

5

1

11

11

3

12

6

2

14

12

4

9

Explanation / Answer

from abve :

applyinfg regression to deseasonal index:

also seasonal index for quarter 1 =1.03

hence forecast for period 13=(0.379*13+15.146)*1.03=13.7

option B is correct

t sales 4-Qtr Moving Averages Centrd Moving averages seasonal irregular value deseasonal index 1 10 14.71 2 16 18.39 3 11 11 11.125 0.989 16.18 4 7 11.25 11.000 0.636 16.28 5 11 10.75 10.875 1.011 16.18 6 14 11 11.125 1.258 16.09 7 12 11.25 11.500 1.043 17.65 8 8 11.75 12.125 0.660 18.60 9 13 12.5 12.500 1.040 19.12 10 17 12.5 12.625 1.347 19.54 11 12 12.75 17.65 12 9 20.93
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