In reviewing the PLE data, Elizabeth Burke noticed that defects received from suppliers have decreased (worksheet Defects
Question:
In reviewing the PLE data, Elizabeth Burke noticed that defects received from suppliers have decreased (worksheet Defects After Delivery). Upon investigation, she learned that in 2010, PLE experienced some quality problems due to an increasing number of defects in materials received from suppliers. The company instituted an initiative in August 2011 to work with suppliers to reduce these defects, to more closely coordinate deliveries, and to improve materials quality through reengineering supplier production policies. Elizabeth noted that the program appeared to reverse an increasing trend in defects; she would like to predict what might have happened had the supplier initiative not been implemented and how the number of defects might further be reduced in the near future.
Use techniques of regression analysis to assist her in evaluating the data in the worksheet Defects After Delivery. Summarize your work in a formal report with all appropriate results and analyses.
Defects After Delivery | | | | ||
| | | | | |
Defects per million items received from suppliers | | ||||
Month | 2010 | 2011 | 2012 | 2013 | 2014 |
January | 812 | 828 | 824 | 682 | 571 |
February | 810 | 832 | 836 | 695 | 575 |
March | 813 | 847 | 818 | 692 | 547 |
April | 823 | 839 | 825 | 686 | 542 |
May | 832 | 832 | 804 | 673 | 532 |
June | 848 | 840 | 812 | 681 | 496 |
July | 837 | 849 | 806 | 696 | 472 |
August | 831 | 857 | 798 | 688 | 460 |
September | 827 | 839 | 804 | 671 | 441 |
October | 838 | 842 | 713 | 645 | 445 |
November | 826 | 828 | 705 | 617 | 438 |
December | 819 | 816 | 686 | 603 | 436 |
Intellectual Property- The Law of Trademarks, Copyrights, Patents, and Trade Secrets
ISBN: 978-1428318366
3rd Edition
Authors: Deborah E. Bouchoux