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Go Beyond Control Chart Limitations to Predict and Improve Processes
Published:Article authors, participants in discussion forums and even software documentation claim that any data and especially time-sequenced data are useful only if they are homogeneous – that is, only if they display control chart stability (CCS).1,2,3,4 According to one quality control expert, Donald J. Wheeler, when out-of-control signals occur, “all of our computations, and all of […]
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