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Basic Analysis and Graphing - SAS

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Chapter 6 Performing Contingency <strong>Analysis</strong> 207<br />

Additional Examples of the Contingency Platform<br />

6. From the red triangle menu next to Contingency <strong>Analysis</strong>, select Cochran Mantel Haenszel.<br />

7. Select Protein/Fat as the grouping variable <strong>and</strong> click OK.<br />

Figure 6.15 Example of a Cochran-Mantel-Haenszel Test<br />

From Figure 6.15, you notice the following:<br />

• The Tests report shows a marginally significant Chi-square probability of about 0.0799, indicating some<br />

significance in the relationship between hot dog taste <strong>and</strong> type.<br />

• However, the Cochran Mantel Haenszel report shows no relationship at all between hot dog taste <strong>and</strong><br />

type after adjusting for the protein-fat ratio. The Chi-square test for the adjusted correlation has a<br />

probability of 0.857, <strong>and</strong> the Chi-square probability associated with the general association of categories<br />

is 0.282.<br />

Example of the Agreement Statistic Option<br />

This example uses the Attribute Gauge.jmp sample data table. The data gives results from three people<br />

(raters) rating fifty parts three times each. Examine the relationship between raters A <strong>and</strong> B.<br />

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

2. Select Analyze > Fit Y by X.<br />

3. Select A <strong>and</strong> click Y, Response.

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