For a certain company, the monthly percentages of all shipments received on time over the past...
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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, 83, 84, 85, 85, 82, 83, 84, and 83. (a) Construct a time series plot. Monthly Percentage mmm 86 85 77- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month Month 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month 84 83 82 81 80 79 78 77 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month What type of pattern exists in the data? 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. 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 cyclical pattern. Overall, the time series plot exhibits a consistent trend pattern. 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. (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 forecast. (Round your answer to two decimal places.) For a certain company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 83, 84, 85, 85, 82, 83, 84, and 83. (a) Construct a time series plot. Monthly Percentage mmm 86 85 77- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month Month 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month 84 83 82 81 80 79 78 77 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Month What type of pattern exists in the data? 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. 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 cyclical pattern. Overall, the time series plot exhibits a consistent trend pattern. 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. (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 forecast. (Round your answer to two decimal places.)
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