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	Free Form Folio Multiple Linear Regression Folio

Measurement Systems Analysis

In order to successfully conduct design of experiments, it is important to use an adequate system for recording measurements (where a "measurement system" includes the operators who perform the measurements, the measuring device that they used and their method for using the device). DOE++ includes three tools for evaluating and comparing measurement systems. You can use these tools to:

• Help you determine whether you should use a particular measuring device.

• Compare one measuring device to another.

• Compare a measuring device's performance before and after a repair.

• Investigate the sources of variation in the measurement results (e.g., variation could result from differences in how operators use a measuring device).

The three tools for measurement systems analysis are described next:

• The linearity and bias folio is used to estimate a measuring device's accuracy (i.e., the extent to which the device underestimates or overestimates the measured values, across the device's expected operating range).

• The gage R&R folio is used to estimate a measurement system's precision (i.e., the variation in measurements that can be expected when the same part is measured repeatedly using the same measuring device).

• The gage agreement folio is used to compare the accuracy and precision of two systems.

To add one of these folios to your project, choose Insert > Measurement Systems Analysis > [Folio Type].

The ReliaWiki resource portal provides more information on measurement systems analysis at: http://www.ReliaWiki.org/index.php/Measurement_System_Analysis.