When the report appears, select Count Analysis > Test Rates Across Groups. This produces the
analysis shown in the bottom of Figure 15.21.
Figure 15.21Group Comparison Output
The Test Rates Across Groups command tests (a likelihood-ratio chi-square) whether the defects per
unit (DPU) for each cause is the same across groups.
The
Test Rate Within Groups command tests (a likelihood-ratio chi-square) whether the defects per
unit (DPU) across causes are the same within a group.
Using a Non-Constant Sample Size Across Groups
To specify a unique sample size for a group, add rows to the data table for each group. S ...
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