[quote="newt":312t07ll]So say your mean is 10, and the sigma is 10 you will get any random number between 10-10, and 10+10....[/quote:312t07ll]
Kind of, but sigma is just the width of the bell curve. Specifying 10 doesn't actually mean it will give you a number that's either ten greater or ten less. Here, I made this .cap. A sigma of 4 gives you around about a 32 number deviation from the mean with normally distributed probabilities. Any number is actually possible, but the chance is really small. You should clamp the value if you want it to stay within a certain range.