IQ

Intelligence Quotient (IQ)

IQ is a score used to measure human intelligence.

Scores are normalised for the human population using a mean of 100 and a standard deviation of 15. That is to say that if your IQ is measured at 145, you are 3 standard deviations above the 'average' human being for intelligence (Top 0.1%).

Explore!

The IQ Applet below allows you to find the probability and estimated number of human beings within a defined range of IQ. Drag the blue points on the x-axis to shift the IQ range.