George Kyparisis owns a company that manufactures sailboats. Actual demand for G

Question

George Kyparisis owns a company that manufactures sailboats. Actual demand for George's sailboats during each of the past four seasons was as follows:

Year

Season   1   2 3 4

Winter 1,440 1,240 1,000       920

Spring 1,500 1,400 1,620       1,540

Summer 1,000 2,140 2,020 1,900

Fall 640 810 690 520

George has forecasted that annual demand for his sailboats in year 5 will equal

6,500 sailboats.

Based on the given data and using the multiplicative seasonal model, the demand level for George's sailboats in the spring of year 5 will be ___ sailboats (enter a whole number).

Explanation / Answer

Year

5

Season

1

2

3

4

Seasonal Avg

Seasonal Factor

Forecast

Winter

1,440

1,240

1,000

920

1,150

0.902845927

1188.747

Spring

1,500

1,400

1,620

1,540

1,515

1.189401374

1566.045

Summer

1,000

2,140

2,020

1,900

1,765

1.385672228

1824.468

Fall

640

810

690

520

665

0.522080471

687.406

Average

1,145

1,398

1,333

1,220

Total

4,580

5,590

5,330

4,880

Grandtotal

20,380

Overallavg

1,274

5 Forecast

1,317

Average = average(winter+spring+summer+fall)

So the demand level for George's sailboats in the spring of year 5 is 1515

Year

5

Season

1

2

3

4

Seasonal Avg

Seasonal Factor

Forecast

Winter

1,440

1,240

1,000

920

1,150

0.902845927

1188.747

Spring

1,500

1,400

1,620

1,540

1,515

1.189401374

1566.045

Summer

1,000

2,140

2,020

1,900

1,765

1.385672228

1824.468

Fall

640

810

690

520

665

0.522080471

687.406

Average

1,145

1,398

1,333

1,220

Total

4,580

5,590

5,330

4,880

Grandtotal

20,380

Overallavg

1,274

5 Forecast

1,317

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