Some folks like to use control charts to analyze gauge study results. When using a control chart in this manner, one can assume that the chart should represent a series of gauge studies conducted over a period of time. In this example, let’s say that each morning a gauge is verified by recording five repeated measurements of a certified gauge block. Of course, the variation within the five readings would indicate the gauge’s repeatability, and the stability of the gauge would be exhibited on the control chart. What’s the best control chart to use to monitor this gauge?

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