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Basic Analysis and Graphing - SAS

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Chapter 2 Performing Univariate <strong>Analysis</strong> 67<br />

Additional Examples of the Distribution Platform<br />

In this example, you can be 95% confident that at least 90% of the population lie between .057035 <strong>and</strong><br />

.236715, based on the Lower TI (tolerance interval) <strong>and</strong> Upper TI values.<br />

Example of Capability <strong>Analysis</strong><br />

Suppose you want to characterize the abrasion levels of the tires your company manufactures. The lower <strong>and</strong><br />

upper specification limits are 100 <strong>and</strong> 200, respectively.<br />

1. Open the Tiretread.jmp sample data table.<br />

2. Select Analyze > Distribution.<br />

3. Select ABRASION <strong>and</strong> click Y, Columns.<br />

4. Click OK.<br />

5. From the red triangle menu next to ABRASION, select Capability <strong>Analysis</strong>.<br />

6. Type 100 for the Lower Spec Limit.<br />

7. Type 200 for the Upper Spec Limit.<br />

8. Keep the rest of the default selections, <strong>and</strong> click OK.<br />

9. From the red triangle menu next to ABRASION, select Histogram Options > Vertical.

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