Percentiles
IQ score: how do you compare?
Median 100 test-takers · by definition
IQ tests are built so scores form a bell curve with mean 100 and SD 15. This is the curve, not a measurement of anyone.
test-takers · by definition
| Percentile | IQ score |
|---|---|
| 5th percentile | 75 IQ |
| 10th percentile | 81 IQ |
| 25th percentile | 90 IQ |
| 50th percentile | 100 IQ |
| 75th percentile | 110 IQ |
| 90th percentile | 119 IQ |
| 95th percentile | 125 IQ |
A bell curve fitted to published averages; every value is a modeled estimate.