Answer questions 16-20 please! 16. In an exponential smoothing method, weights a
ID: 354830 • Letter: A
Question
Answer questions 16-20 please!
16. In an exponential smoothing method, weights are assigned a. just to the current actual and predicted values. b. just to the previous data point and its predicted value. c. to all past data points with weight a. d. to all past data points with more recent data points receiving more weight. 17. Which of the following statements are true regarding the difference between forecasts using exponential smoothing and forecasts using a weighted moving average method? a. The exponential smoothing forecasts will have a steeper trend line. b. The weighted moving average forecasts will form a level line of constant value. c. The exponential smoothing forecasts will form a level line of constant value. d. The exponential smoothing forecasts will do a better job of capturing the underlying trend in the data. 18. As alpha increases the exponential smoothing model a. produces sluggish forecasts. b. teacts quickly to changes in the data. c. reacts slowly to changes in the data. d. does not change 19 Which of the following describes an additive seasonal effect in times series data? a. An occasional pattern of equal magnitude b. An occasional pattern of unequal magnitude c. A regular, repeating pattern of equal magnitude d. A regular, repeating pattern of increasing magnitude 20 Which of the following describes a multiplicative seasonal effect in times series data? a. An occasional pattern of equal magnitude b. An occasional pattern of unequal magnitude c. A regular, repeating pattern of equal magnitude d. A regular, repeating pattern of increasing magnitudeExplanation / Answer
16.
ANS: D : to all past data points with more recent data points receiving more weight
In the exponential smoothing method, the weights are all assigned according to the exponential order. The weights decrease exponentially from recent demand data to older data.
17.
ANS: D : The exponential smoothing forecasts will do a better job of capturing the underlying trend in the data
The exponential smoothing techniques tests for accuracy are easy to compute and the results are accurate than the weighted moving average
18.
ANS: B : reacts quickly to changes in the data
The smoothing constant alpha determines the level of smoothing and the speed of reaction to differences between forecasts and actual occurences. The more rapid the growth, the higher the reaction rate should be.
19
ANS: C: A regular repeating pattern of equal magnitude
The additive model assumes that the residuals or forecasts are roughly the same size through out the series.
20.
ANS: D : A regular repeating pattern of increasing magnitude.
The mulitplicative model assumes that the residuals or forecasts are roughly increasing with the size through out the series.