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Short EMP Study Help

In a Short EMP Study, one operator measures multiple parts using one measurement system. The results are then analyzed using different approaches including a X-R chart. The subgroups are formed based on the results from one part. The part to part variation is shown on the X chart. The within part variation from the range chart, is a measure of the measurement error. The limits on the X chart represent this measurement error so you want to have out of control points on the X chart. If the parts represent production, you can determine how much of the total variance is due to the measurement system. If they are not representative of production, you can use an historical measure of variation to estimate the effect of the measurement system on total variance. This help page describes how to perform the EMP consistency study using data that be downloaded at this link.

Please see the link above for more information on the output.

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