All of the following are nonparametric test, except:: (A) Chi-square test, (B) Z-test, (C) Wilcoxon Rank sum test, (D) Kruskal-Wallis 'H' test
Answer is B. Ans. b. Z-testRef: Parks Text book of Preventive and Social Medicine, 24th Ed; Page No-274-75 PARAMETRIC AND NONPARAMETRICTESTS Parametric testsNonparametric testsBased onGaussian/Normal distributionsNon-normal distributionsType of dataQuantitativeQualitativeComparesMeans (+SD)Percentage, proportions and fractionsExample*. Students (Paired) t-test*. Students (Unpaired) t-test*. ANOVA F-test*. Sign test*. Chi-square test*. Wilcoxon Rank sum test*. Wilcoxon signed Rank test