RapidMiner and TTests

RapidMiner doesn't come with a way to test the probability that the difference in two groups' attributes is statistically significant. (The operator they have called "T-Test" actually does an F-Test and compares the performance of two models, not two groups of data.)

I have created an operator that uses Welch's T-Test to help with this. See the code at github. I've also attached a screenshot showing it in action; this one is looking at sonar data and determining the probability that sonar differences between rocks and mines are significant.


  1. Could you please add the process screenshot?

  2. I'm learning Rapidminer and would also like to see the process screenshot :)