Friedman Test Calculator

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Result:

Calculation:

How to Use the Friedman Test Calculator?

1. First, enter the values for up to five groups.
2. Each column is one treatment or group.
3. Enter only one value in each cell. Multiple values in a cell are not allowed.
4. Also, the commas and spaces are not supported.
5. After entering the values, press the 'Calculate' button to run the Friedman test.
6. Finally, the tool returns the test statistic (Q) and P-value for a given test.
7. In addition, it shows the step-by-step calculations to derive the test statistic (Q).

What is the Friedman Test?

The Friedman test is the alternative non-parametric test to the one-way repeated measures ANOVA. It's used to check the significant difference between the ranks of three or more dependent treatments (groups).

How to Calculate?

The Friedman test is calculated using the following formula:

Where,
n = Number of subjects,
k = Number of groups (treatments),
R_j = The rank sum of group j.