The percentage of those with an IQ score below 70 is __________ percent.
A) 2.2
B) 6.7
C) 16.1
D) 50

Name: The percentage of those with an IQ score below 70 is __________ percent. A) 2.2 B) 6.7 C) 16.1 D) 50
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Question

Quizplus · Accepted Answer

IQ scores are typically distributed in a bell curve (normal distribution) with a mean of 100 and a standard deviation of 15. An IQ score below 70 is more than two standard deviations below the mean, which corresponds to approximately 2.2% of the population.

The Percentage of Those with an IQ Score Below 70