Hit Rate is the effective chance of a skill hitting its intended target. It is a recurring stat, both as a term used in the acctual engine, as well as to describe the effective outcome of the engine's calculation. In RPG Maker, the Hit Ratio is a simple percentual value assigned to skills, determining the chance of wether they don't miss. If they do not miss, the target may still perform a succesful feat of Evasion from the skill (with the chance of evasion again being simply a percentual value in the code entries of enemies, as well as on equipment the player can wear).