yeah the best help is matlab helpfile itself. Here's a bit of a hint. try not to use loops as much as possible as Matlab prefers arrays (as you've already figured that out). So if you were to generate normally distributed random numbers using the randN, (N for normal), command, don't lopp it through "n" times. Instead create an array of size "n" Using arrays as much as possible will make your matlab experience much more enjoyable. also, suppress unnecessary out using " ; " good luck!