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Quality and Reliability Methods - SAS

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92 Shewhart Control Charts Chapter 5<br />

Phases<br />

Example<br />

Open Diameter.JMP, found in the <strong>Quality</strong> Control sample data folder. This data set contains the diameters<br />

taken for each day, both with the first prototype (phase 1) <strong>and</strong> the second prototype (phase 2).<br />

• Select Analyze > <strong>Quality</strong> And Process > Control Chart > XBar.<br />

• Choose DIAMETER as the Process, DAY as the Sample Label, <strong>and</strong> Phase as the Phase.<br />

• Select S <strong>and</strong> XBar.<br />

• Click OK.<br />

Figure 5.17 Launch Dialog for Phases<br />

The resulting chart has different limits for each phase.

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