Mathematics · Statistics
A contingency table categorizes data for cellular phone usage into 2 rows (Yes, No) and 4 columns representing different age groups (18-24, 25-54, 55-64, ≥ 65). The degrees of freedom for performing a Chi-square test of independence on this data will be:
- 1999
- 23✓
- 364
- 465
Correct answer
3
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