Printing out the mean in a multistairhandler class using .mean()

Hey all,

Rather simple, but I’ve been trying to print out the mean for each staircase iteration for a multistairhandler class named ‘trials’. I have the code (which runs after the experiment has ended):

for thisStair in trials:

There are no errors before and after compilation but it also does not print anything? I’m just a little confused. Any help is appreciated! Thank you