The X-Bar Warning Limit Chart


Mitten, L. G.; Sanoh, A.   (1961, ASQC)   Northwestern University; Dai Nippon Spinning Co., Ltd., Japan

Industrial Quality Control    Vol. 18    No. 2
QICID: 4545    August 1961    pp. 15-19
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Article Abstract

A number of devices have been proposed for increasing the efficiency of the X-Bar chart. Many of these violate one of the cardinal principles of practical statistical quality control--techniques must be simple if they are to be practical and useful. The X-Bar chart with warning limits is perhaps the most practical and popular of the modified X-Bar charts proposed to date.


Statistical process control (SPC)

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