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An IQ score of 100 is the most misunderstood number in psychometrics. People hear "average" and assume it means "ordinary" or "limited". It doesn't. 100 is the statistical anchor — the median that every IQ test in the world is calibrated against. And the people who score there make the world run.
Critically, "average IQ" is a population-level descriptor, not a personal verdict. About 50% of adults score between 90 and 110 — the entire "average" band — and they include surgeons, executives, artists, mechanics, teachers, and parents whose competence has nothing to do with falling outside that range.
People at the 100 mark typically:
The biggest myth: that "above average" begins at 105 or 110. It doesn't. Above average begins at 101. Anything from 90 to 109 is statistically "average". The labels matter:
To a meaningful extent, yes. Sustained effort on the underlying cognitive skills — reading, working-memory training, learning new languages, deliberate practice in pattern-based domains — can move scores by 5–10 points over years. Test-prep alone can add a few points by reducing item-format unfamiliarity. Curious where you currently sit? The 25-question test at quizvo.com takes about 15 minutes.
No. 100 is the exact statistical median — half of all people score higher, half lower. It is the textbook definition of "average", not low.
About 50% of people score within ±5 points of 100 (95–105). Around 50% score between 90 and 110 — the wider "average" band.
Yes — across many fields. IQ predicts academic and certain occupational outcomes, but conscientiousness, social skill, and persistence matter as much or more above the basic competence threshold.
About 25 percentile points. 100 is the median (50th percentile); 110 is roughly the 75th percentile, putting you ahead of three-quarters of the population.
Every IQ test is normed so the median scorer in the test's reference sample lands at exactly 100, with a standard deviation of 15. It's a calibration anchor, not an absolute value.
Take the free 25-question Quizvo IQ test and find out exactly where you fall against population norms. Results in under 15 minutes.
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