Which of the following is true about ARIMA models A. ARIMA models cannot be used for seasonal data B. ARIMA models are always better than other forecasting models C. ARIMA models include three parts, AR, MA, and I D. None of the above
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Which of the following is true about ARIMA models
A. ARIMA models cannot be used for seasonal data
B. ARIMA models are always better than other
C. ARIMA models include three parts, AR, MA, and I
D. None of the above
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- The demand of a product of a company is given below for the periods. Can we use Winter method for forecasting demands of the A following 3 periods? Why? If yes, apply it past 4. 6. Demand 27 31 40 31 35 45Historical demand for Peeps is as displayed in the table. Month Demand January 11 February 18 March 31 April 39 May 44 June 53 July 67 August 82 September 96 Develop forecasts from June through October using these techniques: Holt's method with alpha=0.2 and beta=0.1. For Holt's model, the level and trend for May are assumed to be 44 and 12. Judge which forecast method is the best based on MAD.Campus Advising needs to allocate time this week for office appointments, so she needs te forecast the number of students who will seek appointments. The advisor has gathered th following time series data recently: Period Student Appointments 4 weeks ago 95 3 weeks ago 80 2 weeks ago 65 Last week 50 Answer the next two questions (questions 11 and 12), based on this information. 11. What is this week's forecast for student appointments using a three-week moving average? a) 80 b) 50 c) 52 d) 65 e) 78
- The following is the data of recent refrigerator sales at a local Home Depot store. Month 1 2 3 4 5Actual Sales 95 100 80 90 ???Inputs will be exact numbers. What is the forecasted sales in month 5 using naive approach.Please use a 2-month simple moving average method to forecast sales in month 5.Please use a weighted moving average method, with weights of 0.6 one period ago, 0.3 two periods ago, and 0.1 three periods ago, to forecast sales in month 5.Director Very Busy needs to allocate time this week for office appointments, so he needs to forecast the number of employees who will seek appointments. The director has gathered the following time series data recently Period Employee Appointments 4 weeks ago 95 3 weeks ago 80 2 week ago 65 last week 50 a. What would naive forecasting suggest as the number of employee appointments that can be expected this week? " b. b. What is this week's forecast for employee appointments using a 3-week moving average? What would the same forecast be using a 2-week moving average?"Which of the following approaches can help you mitigate the challenges of poor forecasts? a. Obtain and use the best, most recent information available b. Always use simple forecasting techniques c. Build flexible operations d. Minimize inventory Oe. All of the above Of. a and c'only g. b and d only
- 2. Montyboy Pet Shop ships boxed can dogfood anywhere in the country. Using the following information, forecast the shipments for the first four months. Seasonal Relative Month January February March 1.2 1.3 1.3 1.1 0.8 0.7 The monthly forecast equation being used is: Yt = 402 + 3t April May June Where: to = January last year Yt = number of shipments Month July August September October November December Seasonal Relative 0.8 0.6 0.7 1.0 1.1 1.4 Question: Determine the trend amounts for the first four months of the next year assuming January, t=24; February, t=25; etc. Note: Round answers to whole numbers.How Forecasts is compared with predicted values? why these both terms are different?Mr. Geppetto uses exponential smoothing to predict revenue in his wood carving business. He uses a weight of = .4 for the naïve forecast and (1-) = .6 for the past forecast. What revenue did he predict for March using the data below? MONTH REVENUE FORECAST Nov 100 100 Dec 90 100 Jan 115 ---- Feb 110 ---- MARCH ? ?
- Two different forecasting techniques (F1 and F2) were used to forecast demand for cases of bottled water. Actual demand and the two sets of forecasts are as follows: PREDICTED DEMAND Period Demand F1 F2 1 66 75 67 3 70 70 4 74 69 72 69 70 73 6. 72 68 75 7 80 77 8. 78 74 84 Click here for the Excel Data File a. Compute MAD for each set of forecasts. Given your results, which forecast appears to be more accurate? (Round your answers to 2 decimal places.) MAD F1 MAD F2 appears to be more accurate. 3o5 o o 0 o 677 6 N LO N N 677 6700forecasts? 7. Contrast the use of MAD and MSE in evaluating forecasts. 8. What advantages as a forecasting tool does exponential smocDirector Very Busy needs to allocate time this week for office appointments, so he needs to forecast the number of employees who will seek appointments. The director has gathered the following time series data recently Period Employee Appointments 4 weeks ago 95 3 weeks ago 80 2 week ago 65 last week 50 a. What would naive forecasting suggest as the number of employee appointments that can be expected this week? "b.