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www.quora.com/What-are-average-IQ-scores-by-age

IQ is a mean of 100 and a standard deviation of 15 for all ages. So if you are dead-average for people of your age group, your IQ will be 100. If you are smarter than 98% of the people in your age group, your IQ will be 130 or 131.

en.wikipedia.org/wiki/IQ_classification

IQ tests generally are reliable enough that most people ages ten and older have similar IQ scores throughout life. Still, some individuals score very differently when taking the same test at different times or when taking more than one kind of IQ test at the same age. For example, many children in the famous longitudinal Genetic Studies of Genius begun in 1921 by Lewis Terman showed declines ...

Average IQ Score. Though the spectrum of IQ scores is wide at first glance, the majority of people score between 85 and 115. IQ scores are calculated by taking someone’s mental age (the age at which they operate) and dividing it by their chronological age (the age that they actually are), and multiplying the answer by 100.

www.verywellmind.com/what-is-a-genius-iq-score-2795585

Bell Curve: When IQ scores are plotted on a graph, they typically follow a bell-shaped curve. The peak of the "bell" occurs where the majority of the scores lie. The bell then slopes down to each side; one side represents scores that are lower than the average, and the other side represents scores that are above the average. Mean: The mean is the average score.

en.wikipedia.org/wiki/Intelligence_quotient

An intelligence quotient (IQ) is a total score derived from several standardized tests designed to assess human intelligence.The abbreviation "IQ" was coined by the psychologist William Stern for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of Breslau he advocated in a 1912 book. Historically, IQ is a score obtained by dividing a...

psychologenie.com/average-iq-score

The average IQ is 100. A score above 100 is considered as above average, while a score below 100 is considered as a below average. An IQ score much below 50 or above 150 is usually not noticed. Studies show that the IQ of half of the population is between 90 and 110, while 25% have higher IQ's, and 25% have lower IQ's.

www.iqtest-center.com/iq-scores.php

IQ Scores - Average IQ Score at IQ Test Center Users IQ scores are the result of a formula based on the number of questions answered correctly on the test. This score has been further adjusted to account for the differences in capabilities among various age groups See what your current position is