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The Willow River Mining Company mines and ships coal. It has experienced the following demand for coal during the past eight years:
Develop an adjusted exponential smoothing model (α = .30, β = .20) and a linear trend line model, and compare the
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- Under what conditions might a firm use multiple forecasting methods?arrow_forwardScenario 3 Ben Gibson, the purchasing manager at Coastal Products, was reviewing purchasing expenditures for packaging materials with Jeff Joyner. Ben was particularly disturbed about the amount spent on corrugated boxes purchased from Southeastern Corrugated. Ben said, I dont like the salesman from that company. He comes around here acting like he owns the place. He loves to tell us about his fancy car, house, and vacations. It seems to me he must be making too much money off of us! Jeff responded that he heard Southeastern Corrugated was going to ask for a price increase to cover the rising costs of raw material paper stock. Jeff further stated that Southeastern would probably ask for more than what was justified simply from rising paper stock costs. After the meeting, Ben decided he had heard enough. After all, he prided himself on being a results-oriented manager. There was no way he was going to allow that salesman to keep taking advantage of Coastal Products. Ben called Jeff and told him it was time to rebid the corrugated contract before Southeastern came in with a price increase request. Who did Jeff know that might be interested in the business? Jeff replied he had several companies in mind to include in the bidding process. These companies would surely come in at a lower price, partly because they used lower-grade boxes that would probably work well enough in Coastal Products process. Jeff also explained that these suppliers were not serious contenders for the business. Their purpose was to create competition with the bids. Ben told Jeff to make sure that Southeastern was well aware that these new suppliers were bidding on the contract. He also said to make sure the suppliers knew that price was going to be the determining factor in this quote, because he considered corrugated boxes to be a standard industry item. Is Ben Gibson acting legally? Is he acting ethically? Why or why not?arrow_forwardScenario 3 Ben Gibson, the purchasing manager at Coastal Products, was reviewing purchasing expenditures for packaging materials with Jeff Joyner. Ben was particularly disturbed about the amount spent on corrugated boxes purchased from Southeastern Corrugated. Ben said, I dont like the salesman from that company. He comes around here acting like he owns the place. He loves to tell us about his fancy car, house, and vacations. It seems to me he must be making too much money off of us! Jeff responded that he heard Southeastern Corrugated was going to ask for a price increase to cover the rising costs of raw material paper stock. Jeff further stated that Southeastern would probably ask for more than what was justified simply from rising paper stock costs. After the meeting, Ben decided he had heard enough. After all, he prided himself on being a results-oriented manager. There was no way he was going to allow that salesman to keep taking advantage of Coastal Products. Ben called Jeff and told him it was time to rebid the corrugated contract before Southeastern came in with a price increase request. Who did Jeff know that might be interested in the business? Jeff replied he had several companies in mind to include in the bidding process. These companies would surely come in at a lower price, partly because they used lower-grade boxes that would probably work well enough in Coastal Products process. Jeff also explained that these suppliers were not serious contenders for the business. Their purpose was to create competition with the bids. Ben told Jeff to make sure that Southeastern was well aware that these new suppliers were bidding on the contract. He also said to make sure the suppliers knew that price was going to be the determining factor in this quote, because he considered corrugated boxes to be a standard industry item. As the Marketing Manager for Southeastern Corrugated, what would you do upon receiving the request for quotation from Coastal Products?arrow_forward
- The manager of Redline Trucking believes that the demand for tires used on his trucks is closely related to the number of miles driven. He has collected the following data covering the past four months. Month 1 2 3 4 Tires Used 100 150 120 80 Miles Driven 15,000 20,000 17,000 11,000 Write an algebraic equation forecasting the demand for tires. Indicate and explain the independenet and dependant variables and the parameters used in your equation.arrow_forwardThe data shown in the following table represent visitors to the Hawaiian Islands over the past several years, by quarter. Use the data for the first five years to estimate the seasonal and trend factors. Then build an exponential smoothing model (incorporating both trend and seasonal factors) to provide for the forecasts of the remaining periods. Plot the actual visitors and the forecasts. Compare the accuracy of the forecasts in the 1985 to 1990 period with those subsequent to that period. Thousands of Persons Second Third Fourth Annual First Quarter Year Quarter Quarter Quarter Visitors 1980 1,004.8 942.9 1,047.3 939.5 3,934.5 1981 959.0 984.5 1,042.3 948.8 3,934.6 1982 1,054.0 1,048.7 1,110.7 1,029.5 4,242.9 1983 1,069.9 1,071.5 1,146.4 1,080.2 4,368.0 1984 1,218.5 1,206.8 1,222.9 1,207.4 4,855.6 1985 1,301.5 1,129.6 1,266.9 1,186.2 4,884.2 1986 1,393.2 1,421.2 1,450.9 1,341.8 5,607.1 1987 1,448.9 1,370.0 1,555.2 1,425.8 5,799.9 1988 1,484.9 1,488.2 1,635.6 1,533.7 6,142.4 1989…arrow_forwardThe manager of a fabric company needs to accurately forecast the demand for fabric. If the customers do not order enough fabric (in 10,000 yards), they will buy their fabric from one of the company’s major competitors. The company has collected the following demand data for the past 10 months. Compute a weighted three-month moving average forecast using weights of (a) 10%, 30%, 60%, and (b) 25% 30% 45% for the most distant data, next recent, and the most recent respectively. Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Demand 37 45 47 50 52 54 58 60 63 65 Forecast Table: Month Actual WMA (10%, 30%, 60%) WMA (25%, 30%, 45%) January February March April May June July August September Octoberarrow_forward
- Weekly income for Quiet Mental Breakdown, an online psychology firm, is provided below. Determine, on the basis of minimizing the mean square error, whether a three-period or four-period simple moving average gives a better forecast. Week Income 1 980 2 1040 3 1120 4 1050 5 960 6 990 7 1030 8 1260 9 1240 10 1100 Group of answer choices Both the four-period & three-period simple moving averages have the same forecast accuracy in terms of their MSE There is not enough information to determine the answer The four-period simple moving averages gives a better forecast because it has the smallest MSE The three-period simple moving average gives a better forecast because it has the smallest MSEarrow_forwardUse microsoft excel spreadsheets to solvearrow_forwardPlease see attached image for chart to answer questions. Prepare a graph that shows the four-year demand history for the bow rake. Discuss any apparent trend and seasonal patterns. Which forecasting method might be best for bow rakes for each month of Year 5? Why? Use the forecasting method you recommended in part c to forecast demand for each month of Year 5. OM Explorer is highly recommended to develop your forecasts.arrow_forward
- Use the sales data in the table ( attached Image) and apply the same forecast method when α = 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1. What is the best value for α? What does the best value of α indicate or show in regards to the forecast model? (Hint: Use Microsoft Excel to solve the question)arrow_forwardSales of Volkswagen's popular Beetle have grown steadily at auto dealerships in Nevada during the past 5 years (see table below). Using exponential smoothing with a smoothing constant (α) of 0.30 and a starting forecast of 420.00, the following sales forecast has been developed: Year Sales Forecasted Sales 1 460 420.00 2 510 432.00 3 520 455.40 Using smoothing constants of 0.60 and 0.90, develop forecasts for the sales of VW Beetles. Use MAD to determine which of the three smoothing constants (0.30, 0.60, or 0.90) gives the most accurate forecast. The MAD for a forecast developed using exponential smoothing with α=0.30 is nothing sales. (Round your response to two decimal places.)arrow_forwardUse the trend projection method, and the trend projection with seasonal adjustment method to create forecasting models in Excel. Next, using the two models, compute the forecasted values of monthly total passengers between 2010 to 2012 Compare the above two models using MAD, MSE, and MAPE Please explain which of the two models is performing better and why? Use the best model to forecast the monthly total passengers for year 2013arrow_forward
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