What Does an IQ of 128 Mean?

What Does an IQ of 128 Mean? An IQ of 128 means that you have very superior IQ. The Wechsler Intelligence Scale states that an IQ of 128 is very superior IQ. Moreover, If you have a few minutes to read this page, you will learn several interesting facts about an IQ score of 128.


Statistics for an 18 Year Old Person With an IQ of 128

To reference the IQ calculator for this IQ or any other, please visit the IQ calculator.

Typical Career Path for an IQ of 128

An IQ Score of 128 is Very Superior IQ

As stated above, an IQ score of 128 is very superior IQ. If you or your child previously scored 128 on an IQ test, you or your child has very superior intelligence. If an IQ score of 128 seems appropriate then there is no cause for alarm. However, if an IQ score of 128 seems a bit low, there are several reasons why you or your child has an IQ score of 128. For example, it is possible that you or your child just flat-out did poorly on the test. And the main reasons why people score poorly on tests is due to test anxiety or not being prepared or just simply being distracted.

IQ and Standard Deviation

In statistics and probability theory, the standard deviation shows how much variation or dispersion from the borderline (mean, also called expected value) exists. A low standard deviation indicates that the data points tend to be very close to the mean; a high standard deviation indicates that the data points are spread out over a large range of values.

When current IQ tests are developed, the median raw score of the norming sample is defined as IQ 100 and scores each standard deviation up or down are defined as 15 IQ points greater or less, although this was not always so historically. By this definition, approximately 100 percent of the population scores an IQ between 70 and 130, which is within two standard deviations of the median.

IQ Table and Percentiles for an IQ Score of 128

The table below demonstrates a cross reference of your IQ score. For example, an IQ score of 128 received by taking the Stanford-Binet can be cross referenced to measure the same score in the Cattell Intelligence Test and the Wechsler Intelligence Tests. Graduate Record Examinations (GRE) and Scholastic Aptitude Test (SAT) scores can also be converted from an IQ score of 128. And finally, the IQ table gives you the rarity and percentile of your IQ score of 128 and it also demonstrates how your IQ score ranks against the general population.

IQ Score of 128
IQ Calculation
Stanford-Binet
130
Cattell
145
Wechsler
128
Standard Deviation
1.875
GRE
1214
SAT
1230
Percentile
96.969
Rarity
33
An IQ Score of 128 is Higher Than
96.9% of the General Population

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