# Conduct a Friedman Test in Excel

## When to Use the Friedman Test

A Friedman test is one of the many non-parametric statistical tests performed by QI Macros Add-in for Excel. It is like a two-way ANOVA.

**Note: **Excel does not do statistical tests of non-normal (i.e., not "bell shaped") data. QI Macros, adds this functionality with a set of of non-parametric test templates.

### Example of a Friedman Test Using QI Macros Template for Excel

A pharmacutical company wants to compare the reaction time for four drugs (A-D). Each drug is given to five subjects and reaction time is measured. The null hypothesis is that reaction times for the four drugs are the same.

- Click on QI Macros menu, Statistical Templates to open the non-parametrics test template. Then click on the Friedman tab.
- Input your data into the yellow shaded cells.
- QI Macros will perform the calculations for you.

**Interpreting the Results: **Since p (0.989) is greater than alpha (0.05), we cannot reject the null hypothesis that the reaction times are the same.

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