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Use a- 0.2 to compute the exponential smootning forecasts for the time seres. Time Series Value Week Forecast 19

Use a- 0.2 to compute the exponential smootning forecasts for the time seres. Time Series Value Week Forecast 19

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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(C) Use a - 0.2 to compute the exponential smoothing forecasts for the time senies. Time Series Week Forecast Value 1 19 2 14 5 3 16 2 4 12 18 4 15 3 Compute MSE. (Round your answer to two decimal places.) MSE - What is the forecast for week 77 (Round your answer to two decimal places.) (d) Compare the three-week moving average approach with the exponential smoothing approach using a = 0.2. Which appears to provide more accurate forecasts based on MSE? Explain. O The exponential smoothing using a - 0.2 provides a better forecast since it has a larger MSE than the three-week moving average approach. O The three-week moving average provides a better forecast since it has a smaller MSE than the smoothing approach. • The exponential smoothing using a = 0.2 provides a better forecast since it has a smaller MSE than the three-week moving average approach. O The three-week moving average provides a better forecast since it has a larger MSE than the smoothing approach. (e) Use a smoothing constant of a - 0.4 to compute the exponential smoothing forecasts. Time Series Week Forecast Value 1 19 2 14 3 16 4 12 18 6. 15
Transcribed Image Text:(C) Use a - 0.2 to compute the exponential smoothing forecasts for the time senies. Time Series Week Forecast Value 1 19 2 14 5 3 16 2 4 12 18 4 15 3 Compute MSE. (Round your answer to two decimal places.) MSE - What is the forecast for week 77 (Round your answer to two decimal places.) (d) Compare the three-week moving average approach with the exponential smoothing approach using a = 0.2. Which appears to provide more accurate forecasts based on MSE? Explain. O The exponential smoothing using a - 0.2 provides a better forecast since it has a larger MSE than the three-week moving average approach. O The three-week moving average provides a better forecast since it has a smaller MSE than the smoothing approach. • The exponential smoothing using a = 0.2 provides a better forecast since it has a smaller MSE than the three-week moving average approach. O The three-week moving average provides a better forecast since it has a larger MSE than the smoothing approach. (e) Use a smoothing constant of a - 0.4 to compute the exponential smoothing forecasts. Time Series Week Forecast Value 1 19 2 14 3 16 4 12 18 6. 15
Consider the following time series data. 2| 3 4 56 7 Month 17 21 13 Value 22 11 18 10
Transcribed Image Text:Consider the following time series data. 2| 3 4 56 7 Month 17 21 13 Value 22 11 18 10
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