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📸 Chi-Square Goodness of Fit in SPSS
Goodness of Fit vs. Test of Independence
The chi-square test of independence tests whether two variables are related. The chi-square goodness of fit test is different — it tests whether the observed frequency distribution of a single categorical variable matches a specified expected distribution.
Example: Are blood types distributed equally? Do patients' preferred treatment choices match population norms?
Running Goodness of Fit in SPSS
📸 Goodness of fit test output
APA Reporting
A chi-square goodness of fit test indicated that the distribution of blood types in the patient sample differed significantly from population norms, χ²(3)=12.43, p=.006.
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