What Is the Average IQ?
The average IQ is 100 because modern IQ tests are normed so the population mean equals 100.
Key Takeaways
- A score of 100 is about the 50th percentile.
- Tests are re-normed over time because population performance can shift, a pattern linked to the Flynn Effect.
- Average does not mean limited. It describes the center of one measured distribution.
Score Context
This guide is part of the Rice Purity Hub IQ knowledge cluster. It explains the topic in plain language, uses standard psychometric terms, and links back to the free IQ test so readers can compare ideas with a private browser-scored estimate.
Limits And Clinical Use
IQ scores use a normal distribution with a mean of 100 and a standard deviation of 15. Percentiles describe how a score compares with a norm group, not a person's worth, creativity, kindness, or future.
How This Connects To The IQ Test
Online tests can be useful for self-reflection, but they are not clinical assessments. A licensed psychologist must administer instruments such as the WAIS, Stanford-Binet, or WISC when results affect diagnosis, placement, or accommodations.
Related Guides
FAQ
What is the key point of what is the average iq??
The average IQ is 100 because modern IQ tests are normed so the population mean equals 100.
Is this page medical advice?
No. It is educational content and does not replace a licensed psychological assessment.
Can I take the free IQ test from here?
Yes. You can return to the free IQ test at any time and your answers are scored in your browser.