Statistical tests can be split into two categories. br I. Parametric tests br II. Non-parametric tests. br Parametric tests br (i) Test for Normality br Every data must follow certain distribution. But we have to find the appropriate distribution br from goodness of fit test. br Non-parametric tests: br br List of non-parametric tests and their usage? br Mann-Whitney U test – Compare mean rank between two groups br Friedman test – Compare mean rank between three or more related groups. br Our Quality: br We offer three tier quality check process. br • Subject Matter expertise br • Quality Check br • Quality Assurance br br Contact Us: br UK NO: +44-1143520021 br India No: +91-8754446690 br US NO: +1-972-502-9262 br Email: info@statswork.