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2.
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Select Analyze > Fit Model.
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Verify that 2 appears in the Degree box.
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Click Run.
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7.
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From the red triangle next to Response weight, select Estimates > Joint Factor Tests.
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Note that the test for age has 15 degrees of freedom. This test involves the five parameters for age, the five parameters for age*sex, and the five parameters for height*age. The null hypothesis for this test is that all 15 parameters are zero.