![]() ![]() Points for violated tests are circled and are labeled with the test number. To do this, we right-click on the graph and select Warnings, Tests, and All Tests. There are no points beyond the control limits, but we’ll test for special causes. The grand average and the average range, along with the control limits and the subgroup size, are reported in the Limit Summaries table. JMP automatically groups the measurements for each hour into subgroups and plots the subgroup averages and ranges on the two charts. ![]() We drag and drop Hour over the range chart to create an X-bar and R chart for Thickness. If we don’t have a subgroup variable in our data table, we can use the Set Subgroup Size option under the top red triangle.įor this example, the subgroup variable is Hour. An individual and moving range chart is created automatically. We drag the column Thickness into the Y drop zone. For this scenario, the thickness of five consecutive parts is produced every hour.įirst, we select Control Chart Builder from the Analyze menu under Quality and Process. In this video, we show how to create X-bar and R and X-bar and S charts using the Control Chart Builder and the Metal Parts example. ![]()
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