Question: What IQ Is 99.9 Percentile?

What IQ is the 99th percentile?

99th percentile is a Z-score of 2.3263 (2.3 standard deviations above the mean).

In IQ, 99th percentile, or top 1% is IQ 134.8952, or IQ 135 rounded-off (137.2216 / 137 rounded-off for SD16).

The below gives an IQ big picture overview for -4 to +4 standard deviations (IQ 40 to 160):

What percentile is 140 IQ?

IQ Percentile and Rarity Chart

IQ15 SD PercentileRarity: 1/X

89 more rows

What IQ is the 95th percentile?

95th percentile is top 1 out of 20 in the whole population. At a decent high school, you might be 1 out of 10. In a decent college, about average.

What percentile is an IQ of 125?

The IQ scale – how to interpret an IQ score

IQ test scorePercentileRarity
11515.87%1 in 6.3
11910.00%1 in 10
1255.00%1 in 20
1292.50%1 in 40

9 more rows

What’s the highest IQ on record?

The highest IQ score ever recorded

  • Ainan Celeste Cawley (IQ score: 263)
  • William James Sidis (IQ score: 250-300)
  • Terence Tao (IQ score: 225-230)
  • Marilyn Vos Savant (IQ score: 228)
  • Christopher Hirata (IQ score: 225)
  • Kim Ung-Yong (IQ score: 210)
  • Edith Stern (IQ score: 200+)
  • Christopher Michael Langan (IQ score: 190 – 210)

Is 128 a high IQ?

Yes, 128 is a good IQ score. In fact, 128 IQ means that you have superior intelligence. A 128 is not on top of the IQ scale, but it is higher than normal. To put it in perspective, most IQ scores range from 40 to 140.

Is 115 a high IQ?

If you have an IQ of 115 or above you are capable of the cognitive demands of almost any profession, and can attain the highest levels of education and training. Only 15% of the population have an IQ level of 115 or above. An IQ above 115 is considered to be a ‘High IQ’ – beyond an ‘above average IQ’.

What is the world’s lowest IQ?

The lowest IQ on average in the world is 59, while the highest is 108. The country with the lowest IQ score, on average, is the Equatorial Guinea in Africa. Those who reside in The Equatorial Guinea have an average IQ of 59, which is 49 points lower than the average IQ of Singapore and Hong Kong.

Is an IQ of 100 good?

On many tests, a score of 100 is considered the average IQ. 68 percent of scores fall within one standard deviation of the mean (that is, between 85 and 115). That means that nearly 70 percent of all people score within plus or minus 15 points of the average score.

Is having an IQ of 140 good?

The average score on an IQ test is 100. Most people fall within the 85 to 114 range. Any score over 140 is considered a high IQ. A score over 160 is considered a genius IQ.

Is 144 a high IQ?

The average score on an IQ test is 100. 85 to 114: Average intelligence. 115 to 129: Above average or bright. 130 to 144: Moderately gifted.

How do you calculate mental age IQ?

The formula was: IQ = Mental age ÷ Physical age × 100. No matter what the child’s chronological age, if the mental age is the same as the chronological age, then the IQ would equal 100. Modern intelligence tests, such as the current Stanford-Binet test, no longer compute the IQ using that formula.