Calculate P Value From Wilcoxontest. The Mann Whitney Test Wiki is an excellent source of its history and background as well as its statistical theory. Enter the data into the box on the right.
Because the dependent samples t-test analyzes if the average difference of two repeated measures is zero it requires metric interval or ratio and normally distributed data. P-value The Wilcoxon test statistic W is the sum of the ranks associated with the observations that exceed the hypothesized median. Then this Wilcoxon rank-sum test will compute the p-value for sample sizes that are sufficiently large to use normal approximation.
The Wilcoxon sign test uses ranked or ordinal data.
Weight by company W 13 p-value 004988 alternative hypothesis. The Wilcoxon test showed that the difference was significant p. Tails of tails. Mann Whitney test also known as Wilcoxon rank sum test.
