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9/4/2015 Assignment Print View
http://ezto.mheducation.com/hm.tpx?todo=printview 1/8
1. Award: 25 out of 25.00 points
Score: 100/100 Points 100 %
Problem 3-2
National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a sevenmonth period were as follows:
Month Sales
(000)Units Feb. 19 Mar. 18 Apr. 15 May 20 Jun. 18 Jul. 22 Aug. 20
b. Forecast September sales volume using each of the following:
(1) A linear trend equation. (Round your intermediate calculations and final answer to 2 decimal places.)
Yt 20.86 thousands
(2) A fivemonth moving average.
Moving average 19 thousands
(3) Exponential smoothing with a smoothing constant equal to .20, assuming a March forecast of 19(000). (Round your intermediate calculations and final answer to 2 decimal places.)
Forecast 19.26 thousands
(4) The naive approach.
Naive approach 20 thousands
(5) A weighted average using .60 for August, .30 for July, and .10 for June. (Round your answer to 2 decimal places.)
9/4/2015 Assignment Print View
http://ezto.mheducation.com/hm.tpx?todo=printview 2/8
Weighted average 20.40 thousands
References
Worksheet Learning Objective: 0307 Use a naive method to make a forecast.
Learning Objective: 0310 Prepare an exponential smoothing forecast.
Problem 32 Learning Objective: 0308 Prepare a moving average forecast.
Problem 3-2
National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a sevenmonth period were as follows:
Month Sales
(000)Units Feb. 19 Mar. 18 Apr. 15 May 20 Jun. 18 Jul. 22 Aug. 20
b. Forecast September sales volume using each of the following:
(1) A linear trend equation. (Round your intermediate calculations and final answer to 2 decimal places.)
Yt 20.86 ± 0.10 thousands
(2) A fivemonth moving average.
Moving average 19 thousands
(3) Exponential smoothing with a smoothing constant equal to .20, assuming a March forecast of 19(000). (Round your intermediate calculations and final answer to 2 decimal places.)
Forecast 19.26 ± 0.10 thousands
9/4/2015 Assignment Print View
http://ezto.mheducation.com/hm.tpx?todo=printview 3/8
2. Award: 25 out of 25.00 points
(4) The naive approach.
Naive approach 20 thousands
(5) A weighted average using .60 for August, .30 for July, and .10 for June. (Round your answer to 2 decimal places.)
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