What percentage of the population has an IQ between 100 and 115?
68\%
68\% of people have IQs between 85 and 115 (100 +/- 15). 95\% have IQs between 70 and 130 (100 +/- (2*15). 99.7\% have IQs between 55 and 145 (100 +/- (3*15).
Is an IQ of 110 OK?
For example, on The Wechsler Adult Intelligence Scale and the Stanford-Binet test, scores that fall between 90 and 109 are considered average IQ scores. On these same tests, scores that fall between 110 and 119 are considered high average IQ scores. Scores between 80 and 89 are classified as low average.
How rare is an IQ of 140?
The first genius IQ score was around 140. That’s about one in every 250 people.
What percentage of people have an IQ lower than 100?
Approximately 50\% of people have an IQ lower than or equal to 100. The graph represents the normal distribution of IQ scores. X-axis shows the scores and Y-axis shows the percentage of population with the score. The light blue color represents the scores above yours and the dark blue – the scores below yours.
What is the distribution of IQs in the world?
IQ Distribution in Population – Intelligence The IQ across the world is fairly distributed on a bell curve. 70\% of all people have an IQ from 85 to 115, the average IQ being 100, which is having the same mental and chronological age. Only about 2.5\% are either very gifted, or mentally disabled.
What is the 2nd percentile of IQ?
IQ percentile The percentile of a score is the percentage of people who score equal to or below the score. For example, an IQ score of 70 is in the 2nd percentile (for SD = 15), which means that only 2\% of people score 70 or lower. IQ 125 is at the 95th percentile – 95\% of people have an IQ equal to or less than 125.
What is IQ and how is It measured?
IQ tests are designed and updated on a regular basis such that they correspond to the populations they measure in a precise way: a score of 100 is the average score of the population and the distribution of IQ scores has a normal shape with a standard deviation of 15.