What does an IQ of 91 mean?
An IQ of 91 is classified as average. On the standard scale (average 100), it is higher than roughly 27% of people — about 1 in 2 people score 91 or higher.
91
Average
What this range means
The center of the distribution. About half of all people score between 90 and 110 on standardized tests.
IQ scores follow a bell curve centered on 100 with a standard deviation of 15, which is the convention used by widely known standardized tests. About 68% of people score between 85 and 115, and about 95% score between 70 and 130.
A few honest caveats
A single score is an estimate, not a verdict. Online tests — including ours — measure a narrow slice of reasoning under time pressure. Motivation, sleep, language and test familiarity all move the number. For self-reflection and fun it is genuinely useful; for any formal decision, only a professionally administered assessment counts.
Curious about your own score?
Take the free Quick IQ test — randomized questions, instant percentile, no signup.
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