The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Chi-square test is used to measure the degree of:   (A) Causal relationships between exposure and effect   (B) Association between two variables   (C) Correlation between two variables   (D) Agreement between two observations
['(B) Association between two variables <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Causal relationships between exposure and effect \n (B) Association between two variables \n (C) Correlation between two variables \n (D) Agreement between two observations <> possible answers', '  Chi-square test is used to measure the degree of: <> context@']