It allowed psychologist to compare one subject's IQ with that of another subject
The deviation IQ was important because it helped standardize intelligence test scores by adjusting them for age. This allowed for a more accurate comparison of an individual's cognitive abilities to those of others in their age group.
The average IQ of a person in the US is around 98. IQ scores are standardized to have a mean of 100 and a standard deviation of 15.
The average IQ for a student in the UK is around 100, which is considered to be in the normal range. IQ scores are standardized to have a mean of 100 and a standard deviation of 15.
The average IQ for a human being is between 95 to a 100. The average IQ for someone is 100, or the range of 90-110.
The average IQ in the United States is around 98. IQ scores are standardized to have a mean of 100 and a standard deviation of 15, so an IQ of 98 falls slightly below the average.
The average IQ of a 13-year-old is around 100. IQ scores are designed to have a mean of 100 and a standard deviation of 15, so most 13-year-olds fall within the range of 85 to 115. It's important to note that IQ scores are just one measure of intelligence and may not capture all aspects of a person's abilities.
US IQ standard Deviation is 16.
Intelligence quotient
deviation 15 is better
It is 15 points.
99.6% for
About 98% of the population.
IQ is based on an average of 100 and a standard deviation of 15 for any group
An IQ test is simply a (somewhat flawed) means of assessing a person's "relative intelligence". It is important that IQ is not extremely important when working with such a measure in psychology. Now, the IQ test is designed such that scores follow a pattern known as a "normal distribution". This is not simply an expected distribution! This distribution is very important in the study of statistics, and has many applications to scientific disciplines (such as psychology). A standard deviation is essentially a measure of distance from the mean. For example, say that the average person lives to be 75, with a standard deviation of 4. This means that a person who lives to be 79 would be one standard deviation above the mean, and a person who lives to be 67 would be two standard deviations below the mean. As a table depicting the normal distribution can show, one standard deviation above the mean is at the 84th percentile, while one standard deviation below the mean is at the 16th percentile (two stds above: 97.5th, two stds below: 2.5th) This means that an IQ score of 115 is at the 84th percentile, while an IQ score of 85 is at the 16th percentile. 68% of all people are within this range, and that is "most" people.
The average IQ for any age is 100. A slight deviation either way (95-105) is accepted as normal. Higher is "better".
It depends on the standard deviation. IQ 138 sd 116: 1/114; IQ 138 sd 115: 1/177Have a look at this: http://www.iqcomparisonsite.com/IQtable.aspxBest wishesChristoph
What an IQ of 145 means really depends on the test. On some tests it might means that you are smarter than 99.85% of the population, on others it might mean that you are brighter than about 80% of the population. Modern IQ tests tend to be designed to give a normal distribution of scores with 100 as the mean. A normal distribution is a bell shape, so that the closer the IQ is to 100, the more people there are with that IQ. Exactly how many for a given IQ depends on something called the standard deviation. About two thirds of people have an IQ within 1 standard deviation of 100 (the mean). For example, IQ tests commonly have a standard deviation of about +/-15. This means about two thirds of people have an IQ between 85 and 115. You might call this the average range. About 95% of people will be within two standard deviations, so using the same example, about 95% of people will have an IQ between 70 and 130. And 99.7% within 3 standard deviations. So, on an IQ test with a standard deviation of +/-15, you might say that people with an IQ of 130 or more are above average (in the top 15% or so), and if your IQ is 145 then you are in the top 0.15% of the population. However, the standard deviation depends on the test. Standard deviations on common tests range from 10 to 24. Because of this, these days psychologists tend to talk of percentile ranges when talking about IQ with a certain confidence interval. So, you would be far more likely to be told that your IQ is in the 94% percentile range with a confidence interval of 90%
An IQ is designed to be age independent so your age should be irrelevant. Also, IQ scores are designed so that average IQ score for a population is 100 and the standard deviation of the scores is 15. Thus, around 9.1 % of the population will have an IQ of 117 or higher.