Use Simulink to average several measurements

I'm currently trying to simulate a sensor system that includes averaging.

I would like to record a signal (generated in simulink) of x seconds and do that several times. Afterwards, I would like to take the average of these measurements and do some other processing to investigate the effect it has on the white noise present in the signal. Afterwards, I would like to wrap this in a loop to investigate some of the statistical properties.

I've implemented all this in normal .m files, but due to the complexity of the system this has become a pain to work through. I decided to use simulink because of its graphical nature.

Could anyone advise me on methods of simulating this averaging behaviour?

Thanks!