Demand for a certain item has been as shown below:The forecast for April was 100 units with a smoothing constant of 0.20 and usingfirst order exponential smoothing what is the July forecast? What do you thinkabout a 0.20 smoothing constant?TimeActual DemandApril200Мay50June150

Answered: what is the July forecast? What do yo

Engineering

Mechanical Engineering

what is the July forecast? What do yo

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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An electrical contractor’s records during the last five weeks indicate the number of job requests: Week 1 2 3 4 5 Jobs 20 22 18 21 22 Predict the number of requests for week 6 using each of this method:c. Exponential smoothing with α = .30; use 20 for week 2 forecast
Forecast sales for the 7th period. For leveling, use exponential smoothing 0.20 and moving average 3 for averaging; and linear and exponential functions for trend data. Assume an initial exponential forecast of 60 units in period 2 if you decide to use it (i.e., no forecast for period 1). Period Demand 1 67 2 72 3 68 4 20 5 70 6 66 7 68
The processing of raw coal involves “washing,” in which coal ash (nonorganic, incombustible material) is removed. The article “Quantifying Sampling Precision for Coal Ash Using Gy’s Discrete Model of the Fundamental Error” (Journal of Coal Quality, 1989:33–39) provides data relating the percentage of ash to the volume of a coal particle. The average percentage of ash for six volumes of coal particles was measured. The data are as follows: Volume (cm3) 0.01 0.06 0.58 2.24 15.55 276.02 Percent ash 3.32 4.05 5.69 7.06 8.17 9.36 Using the most appropriate model, predict the percent ash for particles with a volume of 48 cm3. Round answer to three decimal places. * the answer i got was of 6.260 was wrong
The sales of a product during the last four years were 860, 880, 870 and 890 units. The forecast for the fourth year was 876 units. If the forecast for the fifth year, using simple exponential smoothing, is equal to the forecast using a three period moving average, what is the value of the exponential smoothing constant?
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A textbook publishing company has compiled data on total annual sales of its business texts for thepreceding nine years:Year 1 2 3 4 5 6 7 8 9Sales (000) 40.2 44.5 48.0 52.3 55.8 57.1 62.4 69.0 73.7a. Using an appropriate model, forecast textbook sales for each of the next five years.b. Prepare a control chart for the forecast errors using the original data. Use 2s limits.c. Suppose actual sales for the next five years turn out as follows:Year 10 11 12 13 14Sales (000) 77.2 82.1 87.8 90.6 98.9Is the forecast performing adequately? Explain.
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A dam spillway is to be tested using Froude scaling with a 1:20 model. The model flow has an average velocity of 0.7 m/s. What is the velocity of prototype?
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