Geometry Fit Graph
The Geometry Fit Graph makes detection of outliers easy.
The Geometry Fit Graph allows you to view an interactive graph of the errors for all points in the fit. It is an excellent way to visually find outliers.
Any point (outliers in particular) can be removed from the fit by way of the graph, and you can also find the point name and error for every point.
To Remove an Outlier from the Fit Using the Graph:
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Left-click the point on the graph and choose Ignore Point.
To View a Point’s Name and Error:
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Left-click a point in the graph. The point name and error will appear at the top of the context menu.
In addition to a run chart of the data, you can also view a statistical histogram of the data
The histogram also includes the Lower Control Limit (LCL), average, and Upper Control Limit (UCL) at 2 sigma. As seen above, the histogram can also be used to detect an outlier, in this case located far outside the UCL.
By removing the outlier from the fit, the histogram reveals a more natural bell-shaped curve, as real-world data would typically indicate.
Both the histogram and the run chart can be easily copied to the clip- board for pasting into a report or graphics program.
To Copy a Chart to the Clipboard:
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Display the desired chart, then right-click the chart and select Copy to Clipboard.