sure to some extent. But I'm sure "good at iq tests" is also a good measure of other things. "Intelligence" is a bit of a loaded word, but it wouldn't be surprising for example if a group scoring >90% on iq tests, have higher scores on average on the SAT than the bottom 10% of iq test scores.
You can also see fairly strong correlation between profession and iq scores. Doctors and professional mathematicians score higher on iq tests on average.
You can also see fairly strong correlation between profession and iq scores. Doctors and professional mathematicians score higher on iq tests on average.