17. Following tables are created in order to generate forecasts using weighted moving average andsimple moving average for the sales amount of a certain product group at an electronics company.a) Show the expression to calculate the missing forecasts from each forecasting technique.(Weighted moving average parameters are n=3 and w+1:0.4, We-2-0.3; W=0.3; smoothingfactor(alfa) for exponential smoothing is 0.3)1 Exponential Smooting TablePeriod12342 Weighted Average ForecastsPeriod1234Actual335246279263MADActual335246279263Forecast193,0205,3229,2?Forecast293,2304,7272,1?Error141,940,649,75?Error41,8-58,76,9?b) Show the expression to calculate mean absolute deviation (MAD) for the forecasting results ofthese two techniques separately.ΣActual - Forecastn

wt-1 = 0.4 wt-2 = 0.3 wt-3 = 0.3 n= 3 alfa = 0.3

Answered: a) Show the expression to calculate the…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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b5 need urgent in 15 minutes
a. Use a 3-month moving average to estimate the month-in-advance forecast of demand for months 4–12 and generate a forecast for the first month of next year. Calculate the average forecast error and mean absolute error. b. Use a 3-month weighted moving average with weights of 0.6, 0.3, 0.1 (most recent to least recent, respectively) to calculate month-in-advance forecasts for months 4–12 and forecast for the first month of next year. Calculate the average forecast error and mean absolute error. c. Compare the average forecast error and MAD for the forecasting methods in parts a and b. Based on these error calculations, which of the two forecast methods would you recommend? Why?
a. Using POM for Windows' least squares-linear regression module, develop a relationship to forecast production ratings from test scores. (Round your responses to three decis and include a minus sign if necessary.) Y= - 23 + .945 x where Y = Production rating and X = Test score. b. If a worker's test score was 54, what would be your forecast of the worker's production rating? 51. (Enter your response as an integer.) c. Comment on the strength of the relationship between the test scores and production ratings. The coefficient of correlation for the least-squares regression model is and the coefficient of determination is (Enter your responses rounded to three decimal places.) More info Test Score Production Rating Production Test Worker Worker Rating Score A 55 43 K 58 57 B 38 43 75 75 93 87 67 48 D 86 77 31 26 E 88 82 62 49 F 66 68 24 25 G 55 47 Q 78 84 Clear all Check 50 46 34 32 41 41 51 58 J 69 74 T 39 30 Print Done LLMN OPoRS
Problem 3
Centerville Bikes and Stuff (CBS) sells motorcycles and accessories. The number of helmets sold by CBS per week for the past six weeks follows. Week 1 2 3 Value 18 13 (a) Construct a time series plot. 20T 18 16- 14- Time Series Value O Week 1 2 3 4 5 6 What type of pattern exists in the data? O The data appear to follow a cyclical pattern. O The data appear to follow a trend pattern. 8 6 O The data appear to follow a seasonal pattern. O The data appear to follow a horizontal pattern. Week 1 2 0 1 3 4 5 6 18 13 15 12 (b) Develop the three-week moving average for this time series. (Round your answers to two decimal places.) Time Series Value 16 14 18 + 2 13 15 4 5 6 15 12 16 3 Compute MSE. (Round your answer to two decimal places.) MSE = What is the forecast for week 7? 12 16 4 14 Week (c) Use a = 0.2 to compute the exponential smoothing values for the time series. Time Series Value 5 14 Forecast 6 Forecast 7 20 18 16 14 12 WE 10 2 + 7 @o 20 18 0 1 2 3 4 Week 5 6 00 0 1 2 3 4 5 Week 6 7…
Y9
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a) Show the expression to calculate the missing forecasts from each forecasting technique. ompany. (Weighted moving average parameters are n=3 and W₁1:0.4, We-2-0.3; Wea=0.3; smoothing factor(alfa) for exponential smoothing is 0.3)