Parametric tests and analogous nonparametric procedures As I mentioned it is sometimes easier to list examples of each type of procedure than to define the terms. If not and the median better represents your data then nonparametric tests might be the better option. Nonparametric Statistics Data Is Not Required To Fit A Normal Distribution Nonparametric Statistics Uses Ordinal Statistics Math Data Science Research Methods Our data seem to meet the homogeneity of regression slopes assumption. . Common statistical tools for assessing these comparisons are t-tests analysis-of-variance and general linear models. The main conclusion from this chart is that the regression lines are almost perfectly parallel. Well rst look at some statistical tests then move to methods outside the testing framework. In modern days Non-parametric tests are gaining popularity and an impact of influence some reasons behind this fame is The main reaso