What is an IQ of 98 considered?
Robert Miller
Updated on February 19, 2026
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.
What is the 98th percentile on an IQ test?
131
Most IQ tests are designed to yield a mean score of 100 with a standard deviation of 15; the 98th-percentile score under these conditions is 131, assuming a normal distribution.
How many standard deviations is 130 IQ?
So an IQ score of 130 is well above an average and is considered an excellent result. By design, about 96% of all IQ scores fall between 70 and 130 (using the Wechsler Intelligence Scale), so individuals who score 130 or higher on an IQ test are more than two standard deviations better than the average IQ score.
What is the IQ of a gifted child?
A gifted child’s IQ will fall within these ranges: Mildly gifted: 115 to 130. Moderately gifted: 130 to 145. Highly gifted: 145 to 160.
What is standard deviation of IQ?
15 points
The mean, or average, IQ is 100. Standard deviations, in most cases, are 15 points. The majority of the population, 68.26%, falls within one standard deviation of the mean (IQ 85-115).
What’s the standard deviation of an IQ score?
The standard deviation for an IQ score is 15 points. So, 70 percent of all IQ scores fall between 85 and 115 points. Note how this means they fall within one standard deviation of the norm.
What’s the standard deviation of the Wechsler IQ test?
The Wechsler tests have a standard deviation of 15 while the Stanford-Binet tests have a standard deviation of 16, meaning what constitutes an average IQ score on each is slightly different, and also it makes for a slightly wider distribution if you were to graph the Stanford-Binet’s IQ bell curve compared to that of the Wechsler test.
What does it mean when IQ score is 100?
In this case that score is 100. The vertical lines in this chart represent the IQ standard deviation, which is 15 for IQ scores (according to the Wechsler Intelligence Scale ). This is a measure of the variability of the data set. A lower standard deviation means that most of the data is very close to the average.
What does it mean when IQ is close to average?
This is a measure of the variability of the data set. A lower standard deviation means that most of the data is very close to the average. A higher standard deviation means there is a greater spread in the results. The light blue shaded portion of the graph represents one standard deviation above and below the average IQ.