If the subject properly fits all the parameters used to test the subject, than a 72 would indicate a lower than average intelligence. Not there’s anything “wrong” with that.

An average score is 85-115. Mild retardation is about 55-70, give or take a few points and factoring in one’s ability to function.

But did you take an online test or a real test with a psychologist? Online tests cannot be trusted. To prove this to myself, the other day I took 6 different online IQ tests and got 6 different scores ranging from 96-154. Try some different tests and see how different your scores can be. If you’re really interested in what your IQ really is, find a psychologist that is trained to administer IQ tests.