Published: Jan 1990
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Skip-lot sampling, originally introduced by Harold F. Dodge in 1955, provides for a method of reducing the amount of sampling inspection of lots of good quality, as evidenced by previous lot acceptances. This is accomplished by skipping the inspection of some of the submitted lots. These plans, designated as SkSP-2, are evaluated by such standard measures as the Operating Characteristic (OC) curve, the average sample number, and the average run length, a measure of the plan's ability to detect that a sudden shift in quality levels has occurred. A table is provided to help in designing a skip-lot plan by matching its OC curve to that of a given single sampling plan. An example is used to illustrate this.
Skip-lot sampling, OC curve, operating ratio, reference plan
Fellow of the American Society for Quality Control, McDonnell Aircraft Co., St. Louis, MO
Paper ID: STP25440S