Questions from Operations Management

Q: Given the data shown below, use α = .1 and

Given the data shown below, use α = .1 and β = .2 to create a trend enhanced smoothing based forecast for period 6. Assume that FIT1 = 20 and T1 = 3.

Q: Re-solve problem 20 above using a simple exponential smoothing model

Re-solve problem 20 above using a simple exponential smoothing model with =.8, and with a 2-period moving average model. Which model is best?

Q: Use the data in problem 9 to create a Pareto diagram

Use the data in problem 9 to create a Pareto diagram

Q: Given the data in the table below: /

Given the data in the table below: a. Compute the forecast for period 12 using a causal regression model and assuming that oil price for period 12 is 65. b. Create a graph of the gasoline sales and o...

Q: If last period’s forecast was 27 and the demand was 30,

If last period’s forecast was 27 and the demand was 30, what was the forecast error? What would be the forecast for the next period using an exponential smoothing model with alpha = 0.5?

Q: Use the Excel spreadsheet that accompanies this chapter to evaluate different forecasting

Use the Excel spreadsheet that accompanies this chapter to evaluate different forecasting models using the ice cream sales data. Try the following parameters for the moving average and simple exponent...

Q: You have become concerned about the amount of copier paper used in

You have become concerned about the amount of copier paper used in your office after repeatedly running out of supplies. Your assistant keeps track of the number of reams (packages of 500 sheets) for...

Q: Assume that you are the production manager for Fast Current Kayaks of

Assume that you are the production manager for Fast Current Kayaks of Washington State. One of the products that you make and sell is the “Fast Current” sea tourin...

Q: Using α= 0.5 and the data below, compute

Using α= 0.5 and the data below, compute exponential smoothing forecasts for periods 2 through 8.

Q: The owner of an on-line video rental service has recorded

The owner of an on-line video rental service has recorded the following rentals each week: a. Use a 3 week moving average to forecast sales for each of the weeks 4 through 9. b. Use a 4 week moving a...