The Number of Degrees of Freedom for a Two-Way Contingency $I \cdot J$

question 32

Multiple Choice

The number of degrees of freedom for a two-way contingency table with I rows and J columns is

• A) \(I \cdot J\)
• B) \(( I - 1 ) \cdot J\)
• C) \(I \cdot ( J - 1 )\)
• D) \(( I - 1 ) \cdot ( J - 1 )\)
• E) \(I + J - 1\)

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