Question: 3.35 Use a partitioning argument to explain why G2 for testing independence cannot increase after combining two rows (or two columns) of a contingency table.

3.35 Use a partitioning argument to explain why G2 for testing independence cannot increase after combining two rows (or two columns) of a contingency table.

[Hint: Explain why G2 for full table = G2 for collapsed table +G2 for table of the two rows that are combined in the collapsed table.]

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