Average IQ of all criminals, or criminals that got caught?

Probably not directly related, but mainly due to fewer opportunities. This is one of the reasons I strongly agree with universal basic income. The capitalistic game is harder than many people are capable of playing. They shouldn't have to suffer enormously because of that, and neither should society. Otherwise, should we assert that ethics are inherently easier for some people, yet penalize all people the same regardless of their capacities?