<prompt> Quantitative test for same group of individuals before and after study is:-Paired t- testUnpaired t- testZ- testChi-Square test  <response>: 1. Z-test for large samples 2. t-test for small samples applied as: a. Unpaired t-test two independent samples b. Paired t-test single sample correlated observations 3. ANOVA test for 3 or more samples Parametric Tests Non Parametric Tests Based on Normal distribution Non normal distribution Type of data Quantitative Qualitative Compares Means , Propoions, Fractions Examples Paired t-test Unpaired t-test ANOVA test Sign test Chi-square test Wilcoxan test 