Use a gage run chart to assess the variation in the measured values for each measured part. The gage run chart helps you see how much measurement variability is due to operators or parts.
This gage run chart shows the measurements of 6 parts that are selected from a manufacturing process. The parts represent the normal variation of the process. 3 operators measure each part with the same gage 3 times in a random order.
Step 2: Assess the variation between measurements from each operator
For each part, you can compare both the variation between measurements made by each operator, and differences in measurements between operators. You can also look at the measurements in relationship to the horizontal reference line. By default the reference line is the mean of all observations.