The Simpson Corporation has gathered information regarding past sales of custom t-shirts. Year Sales 2013  $225,000 2014  $193,000 2015  $248,000 2016  $360,000 2017  $340,000 2018  $295,000 2019  $310,000

Essentials of Business Analytics (MindTap Course List)
2nd Edition
ISBN:9781305627734
Author:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Publisher:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Chapter6: Statistical Inference
Section: Chapter Questions
Problem 40P
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The Simpson Corporation has gathered information regarding past sales of custom t-shirts.

Year Sales
2013  $225,000
2014  $193,000
2015  $248,000
2016  $360,000
2017  $340,000
2018  $295,000
2019  $310,000

 

  1. Predict the sales for 2020 using the moving average method.
  2. You noticed a sudden jump in sales for 2016. After inquiring about this jump, you were notified by your manager about a one-time special order sale for $60,000 in that year that is not likely to be repeated. What revision, if any, would you make in the sales information used for projection?
  3. If you revised your historical sales to be used to project 2020 sales, please recalculate your projection using the moving average method.
  4. Which projection (Question 1 or Question 3) do you feel is more representative of the Simpson Corporation's historical sales? Why?
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