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It allowed psychologist to compare one subject's IQ with that of another subject

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US IQ Standard deviation?

US IQ standard Deviation is 16.


What is deviation IQ?

Intelligence quotient


How is better to calculate your IQ with the basis of deviation 15 or with the basis of deviation 24?

deviation 15 is better


What is the standard deviation of the normal IQ curve?

It is 15 points.


What is the average IQ of a person in the US?

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.


IQ scores are normally distributed with a mean of 100 and a standard deviation of 15 If a certain statistician has an IQ of 140 what percent of the population has an IQ less than she does?

99.6% for


IQ scores are normally distributed with a mean of 100 and a standard deviation of 15 if a certain statistician has an IQ of 140 what percent of the population has an IQ less than he does?

About 98% of the population.


What is the percentage of population with an IQ of 128?

Approximately 6.68% of the population falls within one standard deviation above the mean IQ score of 100, which includes an IQ of 128.


What is The average IQ for a student in the UK?

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.


What is the average IQ for a 11 year old?

IQ is based on an average of 100 and a standard deviation of 15 for any group


When your Fourteen what should you IQ be?

The average IQ for any age is 100. A slight deviation either way (95-105) is accepted as normal. Higher is "better".


Why would an IQ test be developed so most people would score between 85 and 115?

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.