Wilcoxon Signed Rank Test: Step by Step Procedure

The wilcoxon signed rank test determine whether the median of the sample is equal to some specified value. The Wilcoxon signed rank test utilizes both the sign of the difference as well as the magnitude of the differences, hence it provides more information than the sign test, it is often more powerful non-parametric test. Assumptions […]

Run Test in statistics: Step by Step procedure

In many situation, we are interested to whether the data collected for statistical analysis is random or not. In most all statistical inference we assume that the data is in a random sample. If the randomness of a sample is suspected, we test it’s randomness before, going to statistical analysis. In detail, There are many […]

Median Test step by step procedure with mathematical example

The median test is one of the simplest and most widely used procedure for testing the Ho that the independent sample have been drawn from the population with equal median value. This process is a non-parametric testing procedure. Assumptions of Median Test There are some assumptions, The date consist of two independent random samples x1,x2,…,xn and […]

Non-Parametric Tests in Statistics

In statistics, Non parametric tests test which does not make any assumption as to the form of distribution in the population from which the sample is drawn i.e to say that the functional form of the distributions is not known. The test is called non parametric tests or distribution free test. Assumptions of Non parametric test […]