The following are multiple choice questions (with answers) about medical knowledge.   **Question:** For testing the statistical significance of the difference in heights of school children among three socio economic groups the most appropriate statistical test is:   (A) Student's 't' test   (B) Chi-squared test   (C) Paired 't' test   (D) One way analysis of variance (one way ANOVA)
['(D) One way analysis of variance (one way ANOVA) <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) Student's 't' test \n (B) Chi-squared test \n (C) Paired 't' test \n (D) One way analysis of variance (one way ANOVA) <> possible answers", '  For testing the statistical significance of the difference in heights of school children among three socio economic groups the most appropriate statistical test is: <> context@']