IQ 80

An IQ of 80 is 20 points below the average of 100, or 1.33 standard deviations. This site classes it as Low Average. About 9.1% of people score at or below 80, which in a class of 30 is roughly 3 people. It sits 10 points past the 70 mark and 5 short of 85.

A score in the low 80s on one online test is not a diagnosis of anything. Only a qualified professional, such as a clinical or educational psychologist, can assess anything clinical, and they never rely on a single number.

A result in the low 80s often reflects the test as much as the person. Timed abstract puzzles are unfamiliar to many adults, especially anyone who left education a while ago or who learned in a different language.

If you want to understand your result, think about which questions felt hard. Running out of time, losing track of a rule and second-guessing yourself are different problems, and each one has a different fix.

Online scores are estimates with wide error bars. For 80, a 5-point window either way runs from about 75, where 1 in 21 score that low or lower, to 85, where it is 1 in 6.

Professional assessments combine several subtests (verbal, visual, memory and speed) and look at the pattern between them, not just one total. A single online total cannot show that pattern.

Reading level matters as well. If the instructions or questions lean on vocabulary, anyone reading in a second language is at a disadvantage that has nothing to do with reasoning.

Near 80 the curve is steep, so a few points change your percentile a lot. Going from 80 to 83 would lift you from the 9.1st to the 12.9th percentile. These are the usual reasons scores swing:

• Stress and mood. Worry takes up working memory. People who feel anxious about tests often score below their usual level.
• Familiarity. People who have seen matrix-style puzzles before tend to do better on them. That is a practice effect, not a change in underlying ability.
• Timing and comfort. Hunger, a headache or testing late at night can all pull a score down on the day.

If IQ follows the standard bell curve, 9.1% of people score 80 or lower. Here is what that share means across whole populations:

About 9.1% of people score 80 or lower, compared with 4.8% at 75 or lower and 16% at 85 or lower. Five points here changes the share by about 7 percentage points.

What your 80 could really be. If you retook a well-made test, landing at 75 or at 85 would be unremarkable. That is the difference between beating 4.8% and 15.9% of people, and short online tests are noisier still.

Which scale was it on? Score reports do not always say. On the common SD 15 scale your 80 stands as it is. If the report used SD 16 it equals about 81, and if it used SD 24 about 88. The percentile follows the converted number.

Nobody famous has a verified IQ in most cases, and retrospective estimates are only made for a narrow group.

No historical figure on this site has an estimate close to 80. Retrospective estimates cluster between about 115 and 250 because they are only made for people with exceptional achievements. That is a selection effect, not a sign that famous or successful people cannot score 80.

Nearby scores and the round-number landmarks, so you can see how quickly the percentile changes around 80. Every row links to that score's page.

People with an IQ of 80 typically score about 750 on the SAT and about 12 on the ACT composite. Scores vary a lot from person to person, so the range shows where about four in five land.