Use the data given below to answer the following question(s). The worldwide sales of cars from 19...

Question

Question

Use the data given below to answer the following question(s).

The worldwide sales of cars from 1981-1990 are shown in the table below. Given: α = 0.2, γ = 0.5, and season length = 1. (Hint: UseXLMiner).

Units sold in

Year thousands

1 750

2 823

3 1034

4 1945

5 1556

6 1300

7 1346

8 1150

9 967

10 1200

Calculate the value of the mean absolute percentage error using the Holt-Winters no-trend model for the given data.

Answer 1

Answer #1

answer is 8.10

Answer 2

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