It doesn't. They both measure two very different things.
An IQ score in the 99th percentile of the general US population means that the individual's score is higher than 99% of the population. This would typically correspond to an IQ score of around 135 or above, indicating high intelligence.
IQ scores are normalized by age, thus theoretically if you got an IQ score of 112 you should always get an IQ score of 112 throughout your life whenever tested. In actual practice deviations in score of about ±5 points are not considered statistically significant. However remember that the only thing an IQ score has ever been shown to consistently predict both reliably and accurately is the ability to score high on IQ tests.
The average IQ is 100. 135 is an Excellent IQ score
Average IQ score is 100.Your score is 'average'.
An IQ score of 122 is an above average IQ score. It is, thus, a good score.
Generally IQ measures are standardized so that an IQ of 100 is the average score for the norming population, and standard deviations can vary from 10 to 15, depending on the measure used.
The average score on an IQ test is about 100. If you score higher than that, your score will be above average.
The average score on an IQ test is about 100. If you score higher than that, your score will be above average.
Superior IQ Score
The average score is 100, so you have an average IQ. http://www.mensa.org.uk/iq-levels/
An IQ score of 97 is just below average.
Hillary Clinton's IQ score is 140. On the IQ scale, this puts her in the high range of "Exceptional."