A researcher compares the proportion of hypertensive individuals across three occupational groups (sedentary, moderate activity, heavy labor) using a 3x2 contingency table. The appropriate test of significance is:
- A Independent samples t-test
- B One-way ANOVA
- C Chi-square test ✓
- D Paired t-test
Correct answer: C. Chi-square test
Explanation
The outcome (hypertensive versus not) and the grouping variable (occupation) are both categorical. The chi-square test is designed to test association between two categorical variables in contingency tables. t-tests and ANOVA require a continuous dependent variable.
Reference: Mahajan's Methods in Biostatistics, 9th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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