True random distribution

The Uniform random distribution or True random distribution describes the probability of random event that are not pseudo-random. In general this applies to Evasion and Blind as well as most non-damage or non-hero-unit related abilities.

Flat distribution
Some mechanics roll a random value between 0 and 1 and scale it along the minimum / maximum gradient. This includes physical right click damage, the Roshan respawn timer (8 to 11 minutes) and the following abilities.