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What IQ scores mean, in plain terms — the average IQ, the full score chart, and the Mensa requirement.

• What is the average IQ?The average IQ is 100, and about two in three people score between 85 and 115. Here is what counts as a normal IQ, why the average is the same at every age, and what country rankings leave out.7 min read
• IQ score chart: what every IQ range meansAn IQ scale chart with every range, from below 70 to 140 and above, how common each score is, and what counts as a good, high or low IQ score.5 min read
• Mensa IQ requirement: what score do you need?To join Mensa you need a score in the top 2% on an approved, supervised test. That is about 131 on most tests, but it depends on the scale. Here is how to qualify.5 min read