In the Measurement Systems Analysis platform, the Linearity and Bias Results report contains a plot and a table for each of the following:
• Bias summary statistics and t test results for each standard value and the overall value.
• Results from an ANOVA test that tests if the slope of the line is equal to zero.
• The parameter estimates and tests for the intercept and the slope. The intercept tests the bias and the slope tests the linearity. The test for the intercept is useful only if the test on the slope fails to reject the hypothesis that the slope is equal to 0.
• Linearity and Bias summary statistics. This table is shown only if you specify values for the sigma multiplier and the historical process sigma. The sigma multiplier is specified in the launch window. There are several ways to specify the historical process sigma.
– Prior to analysis, you can assign the MSA column property to the response and specify the historical process sigma in the column property.
– In the launch window, you can specify the historical process sigma by selecting the Show EMP Metadata Entry Dialog.
– In the report window, you can click the Measurement Systems Analysis red triangle and select Edit MSA Metadata.
– You can directly specify the historical process sigma in a script.
The Linearity and Bias Results red triangle menu contains the following options:
Show Bias Points
Shows or hides the bias points on the graph.
Show Line of Fit
Shows or hides the line of fit on the graph.
Show Fit Confidence Curves
Shows or hides the line of fit confidence curves on the graph.
Show Overall Avg Bias Line
Shows or hides the overall average bias line on the graph.
Show Avg Bias Points
Shows or hides the average bias points on the graph.