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For a certain company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 82, 84, 85, 85, 82, 83, 85, and 83. (a) Construct a time series plot. in un un O Monthly Percentage 86 85 84 83- 82- 81- 80 79 78 77 01 2 3 3 4 5 4 6 7 Month 7 8 8 9 10 11 12 13 86 T 85 84 83 82 81 80 79 78 77 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month Ⓡ 86 85 84 83 82 81 80 79 78 77 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month 86 T 85 84 83 81 80 79 78 77 What type of pattern exists in the data? O Overall, the time series plot exhibits a consistent trend pattern. O The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a seasonal pattern. The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a horizontal pattern. O The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a cyclical pattern. O The last two points may be an indication of a shift to a new level, but overall the time series plot exhibits a horizontal pattern. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month

For a certain company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 82, 84, 85, 85, 82, 83, 85, and 83. (a) Construct a time series plot. in un un O Monthly Percentage 86 85 84 83- 82- 81- 80 79 78 77 01 2 3 3 4 5 4 6 7 Month 7 8 8 9 10 11 12 13 86 T 85 84 83 82 81 80 79 78 77 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month Ⓡ 86 85 84 83 82 81 80 79 78 77 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month 86 T 85 84 83 81 80 79 78 77 What type of pattern exists in the data? O Overall, the time series plot exhibits a consistent trend pattern. O The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a seasonal pattern. The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a horizontal pattern. O The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a cyclical pattern. O The last two points may be an indication of a shift to a new level, but overall the time series plot exhibits a horizontal pattern. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 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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For a certain company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 82, 84, 85, 85, 82, 83, 85, and 83. (a) Construct a time series plot. O Monthly Percentage 86 85 84 83 82 81 80 79 78 77 + 01 2 3 4 5 6 7 8 9 10 11 12 13 Month 86 85 84 83 82 81 80 79 78 77 + 0 1 2 3 4 5 6 7 Month 8 9 10 11 12 13 86 85 84 WW 81 80 79 78 77+ + 01 2 3 4 5 6 7 Month 8 9 10 11 12 13 O 86 85 84 83 81 80 79 78 77+ + 01 What type of pattern exists in the data? O Overall, the time series plot exhibits a consistent trend pattern. O The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a seasonal pattern. The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a horizontal pattern. O The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a cyclical pattern. O The last two points may be an indication of a shift to a new level, but overall the time series plot exhibits a horizontal pattern. 2 3 4 5 6 7 8 9 10 11 12 13 Month
Transcribed Image Text:For a certain company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 82, 84, 85, 85, 82, 83, 85, and 83. (a) Construct a time series plot. O Monthly Percentage 86 85 84 83 82 81 80 79 78 77 + 01 2 3 4 5 6 7 8 9 10 11 12 13 Month 86 85 84 83 82 81 80 79 78 77 + 0 1 2 3 4 5 6 7 Month 8 9 10 11 12 13 86 85 84 WW 81 80 79 78 77+ + 01 2 3 4 5 6 7 Month 8 9 10 11 12 13 O 86 85 84 83 81 80 79 78 77+ + 01 What type of pattern exists in the data? O Overall, the time series plot exhibits a consistent trend pattern. O The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a seasonal pattern. The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a horizontal pattern. O The first two points may be an indication of a shift to a new level, but overall the time series plot exhibits a cyclical pattern. O The last two points may be an indication of a shift to a new level, but overall the time series plot exhibits a horizontal pattern. 2 3 4 5 6 7 8 9 10 11 12 13 Month
(b) Compare a three-month moving average forecast with the exponential smoothing forecast for a = 0.3. Compute the MSE for the three-month moving average forecast. (Round your answer to two decimal places.) Compute the MSE for the exponential smoothing forecast for a = 0.3. (Round your answer to two decimal places.) Which provides more accurate forecasts using MSE as the measure of forecast accuracy? O Both forecasts provide the same level of accuracy using MSE. An exponential smoothing forecast with a = 0.3 provides the most accurate forecast using MSE. A 3-month moving average provides the most accurate forecast using MSE. (c) Using the more accurate forecast, what is the forecast for next month? (Round your answer to two decimal places.)
Transcribed Image Text:(b) Compare a three-month moving average forecast with the exponential smoothing forecast for a = 0.3. Compute the MSE for the three-month moving average forecast. (Round your answer to two decimal places.) Compute the MSE for the exponential smoothing forecast for a = 0.3. (Round your answer to two decimal places.) Which provides more accurate forecasts using MSE as the measure of forecast accuracy? O Both forecasts provide the same level of accuracy using MSE. An exponential smoothing forecast with a = 0.3 provides the most accurate forecast using MSE. A 3-month moving average provides the most accurate forecast using MSE. (c) Using the more accurate forecast, what is the forecast for next month? (Round your answer to two decimal places.)
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