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True-position

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True-position

Used in ANSI Y14.5 measurements, this selection will use the Rayleigh distribution to model measured characteristics resulting from two Normal variables. To fit a Rayleigh distribution, only the specified sigma (process, sample, or population) is needed. Note that the curve generated will be used for K-S values and process capability, but that process sigma is always used to define the distribution limits on the Individual-X chart.


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