Quantitative test for same group of individuals before and after study is:-
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
Paired t- test
Unpaired t- test
Z- test
Chi-Square test
DNB 2018