Launch the Measurement Systems Analysis Platform

Launch the Measurement Systems Analysis platform by selecting Analyze > Quality and Process > Measurement Systems Analysis.

Figure 7.5 The Measurement Systems Analysis Window

The Measurement Systems Analysis window contains the following features:

Select Columns

lists all of the variables in your current data table. Move a selected column into a role.

MSA Method

select the method to use: EMP (Evaluating the Measurement Process) or Gauge R&R. This chapter covers the EMP method. For details about the Gauge R&R method, see the Variability Gauge Charts topic.

Chart Dispersion Type

designates the type of chart for showing variation. Select the Range option or the Standard Deviation option.

Note: For the EMP method, the chart dispersion type determines how the statistics in the EMP Results report are calculated. If the Range option is selected, and you have a one factor or a two factor, balanced, crossed model, the statistics in this report are based on ranges. Otherwise, the statistics in this report are based on standard deviations.

Model Type

designates the model type:

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Main: variables with nominal or ordinal modeling types are treated as main effects.

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Crossed: the model is crossed when every level of every factor occurs with every level of every other factor.

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Crossed with Two Factor Interactions: the model is crossed when each level of two factors occurs with every level of the other factor.

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Nested: the model is nested when all levels of a factor appear within only a single level of any other factor.

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Cross then Nested (3 Factors Only): the factors are crossed and then nested for 3 factors.