I need to generate random numbers within a specified interval, [max;min].
Also, the random numbers should be uniformly distributed over the interval, not located to
By their nature, a small sample of random numbers doesn't have to be uniformly distributed. They're random, after all. I agree that if a random number generator is generating numbers that consistently appear to be grouped, then there is probably something wrong with it.
But keep in mind that randomness isn't necessarily uniform.
Edit: I added "small sample" to clarify.