39+ Intelligence Quotient (Iq) PNG. Iq, or intelligence quotient, is score derived from one of several standardized tests designed to assess an individual's intelligence. An intelligence quotient, more commonly known as an iq, was a measurement of an individual's mental abilities and intellectual development derived from a series of tests.

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The first of these was developed by french psychologist alfred binet in 1905. Graph of intelligence quotient (iq) as a normal distribution with a mean of 100 and a standard deviation of 15. The iq test shows the person's ability to think logically.

It was necessary to find a parameter that shows the level of intelligence, and for this purpose tests were created with tasks for logic and spatial thinking.

The shaded region between 85 and 115 (within one standard deviation of the mean) accounts for about 68 percent of the total area, hence 68 percent of all iq scores. The test has a mean score of 100 points and a standard deviation of 15 points. The iq test shows the person's ability to think logically. Why your cuz is smarter than you: