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4. For the Hawkins Company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 83, 84, 85, 84, 82, 83, 84, and 83. a. Construct a time series plot. What type of pattern exists in the data? b. Compare a three-month moving average forecast with an exponential smoothing forecast for a-0.2. Which provides the better forecasts using MSE as the measure of model accuracy? c. What is the forecast for next month?

4. For the Hawkins Company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 83, 84, 85, 84, 82, 83, 84, and 83. a. Construct a time series plot. What type of pattern exists in the data? b. Compare a three-month moving average forecast with an exponential smoothing forecast for a-0.2. Which provides the better forecasts using MSE as the measure of model accuracy? c. What is the forecast for next month?

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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4. For the Hawkins Company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 83, 84, 85, 84, 82, 83, 84, and 83. a. Construct a time series plot. What type of pattern exists in the data? b. Compare a three-month moving average forecast with an exponential smoothing forecast for a-0.2. Which provides the better forecasts using MSE as the measure of model accuracy? c. What is the forecast for next month?
Transcribed Image Text:4. For the Hawkins Company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 83, 84, 85, 84, 82, 83, 84, and 83. a. Construct a time series plot. What type of pattern exists in the data? b. Compare a three-month moving average forecast with an exponential smoothing forecast for a-0.2. Which provides the better forecasts using MSE as the measure of model accuracy? c. What is the forecast for next month?
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