Is 104 a good IQ for a 15 year old girl?

The average IQ is approximately 100, and also, your IQ does not increase very much as you get older, it can [on average, about 3 points], but there's not usually a big difference. Hope this helps!

Further answer:

It can also decrease with age. However, the effect is not age on IQ, but error across multiple tests resulting in different scores despite the same IQ.

no that's stupid i got 104 and im not that smart so ur dumb no offence