Question 3 The following ACF plots were produced for raw data of monthly sales of two different variables, A and B. a) Explain which variable (A or B) is likely to be easier to forecast. b) Explain how your answer to part a) would change if these were residuals of an ARIMA model instead of "raw data of monthly sales. c) Explain which variable (if any) is likely more seasonal? Variable A: 0.15 0.10- 0.05- 0.00- -0.05- -0.10- -0.15- 0 Variable B: 1.00- 0.75 0.00- 0.25 0.00 124 lag [1M] ..

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
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Question 3
The following ACF plots were produced for raw data of monthly sales of two different
variables, A and B.
a) Explain which variable (A or B) is likely to be easier to forecast.
b) Explain how your answer to part a) would change if these were residuals of an
ARIMA model instead of "raw data of monthly sales".
c) Explain which variable (if any) is likely more seasonal?
Variable A:
0.15-
0.10-
0.05-
0.00-
-0.05-
-0.10-
-0.15-
Variable B:
1.00-
0.75-
0.00-
0.25-
0.00-
lag [1M]
15
Transcribed Image Text:Question 3 The following ACF plots were produced for raw data of monthly sales of two different variables, A and B. a) Explain which variable (A or B) is likely to be easier to forecast. b) Explain how your answer to part a) would change if these were residuals of an ARIMA model instead of "raw data of monthly sales". c) Explain which variable (if any) is likely more seasonal? Variable A: 0.15- 0.10- 0.05- 0.00- -0.05- -0.10- -0.15- Variable B: 1.00- 0.75- 0.00- 0.25- 0.00- lag [1M] 15
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