Non Parametric tests

KNIME Analytics Platform
1

Hi there,

 

I was wondering if anyone knows how to carry out non-parametric hypothesis tests in KNIME such as the Wilcoxon test?

 

Thanks for your help.

2

We do have a paired t-test which might suit your needs, otherwise I suppose you will need to use R nodes for now.

http://www.r-tutor.com/elementary-statistics/non-parametric-methods/wilcoxon-signed-rank-test

Regards,  Aaron

3

Thanks Aaron. Which R node should I use for outputting the results of the statistical test? None of them seem suitable.

4

Vingil,

The simple R snippet is your friend. Just make sure you pass the parameters of interest (p-values etc.) to the data frame which goes back out to KNIME - that's knime.out for the new interactive R nodes, R for the traditional local/server ones, and rOut for the "community flavour" of R scripting.

Cheers
E

5

That worked. Thanks for the help