What Does an IQ of 90 Mean? The Wechsler Intelligence Scale states that an IQ of 90 is classified as dull normal IQ which is also called low average intelligence. Moreover, If you have about five minutes to read this page, you will learn several interesting facts about an IQ score of 90.
To reference the IQ calculator for this IQ or any other, please visit the IQ calculator.
If you or your child previously scored 90 on an IQ test, you or your child has dull normal intelligence which is also known as low average intelligence. If an IQ score of 90 seems appropriate then there is no cause for alarm. However, if an IQ score of 90 seems a bit low, there are several reasons why you or your child has an IQ score of 90. 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.
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.
The table below demonstrates a cross reference of your IQ score. For example, an IQ score of 90 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 90. And finally, the IQ table gives you the rarity and percentile of your IQ score of 90 and it also demonstrates how your IQ score ranks against the general population.