Getting Started in Six Sigma by Michael C. Thomsett

Author:Michael C. Thomsett
Language: eng
Format: epub, pdf
ISBN: 9781119523581
Publisher: Wiley
Published: 2018-03-28T00:00:00+00:00

We expand the summarized Sigma chart from Chapter 1 to show the next step. This detailed chart is shown in Table 4.1.

In finding the defects per million on this chart, we see that 73,552 is just below a Sigma of 2.9. Now we have a quantified quality level. With the goal being improving the Sigma level, when we reduce defects, we would expect to see an improvement as a result, and it will be measurable. In the preceding example, we estimated that there were three opportunities because three departments handled orders; and that there were 426 units processed during a month. In that time, we experienced 94 defects. This means that 94 packages were not shipped within three days.

The project aimed at making this process work better would examine procedures in the sales rep’s handling of orders; in the Marketing Department; and in Shipping and Receiving. If it were possible to cut the number of defects in half, Sigma would be improved to:

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