The chi-square distribution is used to model three different types of tests:

1. Goodness-of-Fit Test

      H0: The sample is from the specified distribution.

      Ha: The sample is not from the specified distribution.

2. Test of Independence

     H0: The variables are independent of each other.

      Ha: The variables are not independent of each other.

3. Comparing Proportions of Multiple Independent Samples


All three models can be computed using ROV BizStats (see Figure 9.28).

Figure 9.28: Chi-Square Tests in ROV BizStats

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