Dear all, I apologize if it is the wrong place, I don't know where I had to post this question since I'm not a mathematician. Well, suppose you have a set of numbers which can be describe by a unknown distribution. I just like to know whether we can use those numbers to generate a set of random number so that they will have the same probability distribution. More precisely, I have a set of atomic velocities which do not obey to the Maxwell distribution. I'd like to generate a new (random) set of velocity. I thought about multiplying each initial value by a uniform random number between -1 and 1 but it does not seem to work. Thank you, Éric.