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What is considered as the average IQ range in persons?

  • A.Between 85 and 115
  • B.Between 60 and 70
  • C.Between 45 and 60
  • D.Between 35 and 45

Answer: A

The average intelligence quotient is taken as 100, and the average range, as commonly given, is between 85 and 115. The ranges below that point to lower or borderline ability. The answer is option A.

IQ scores have a mean of 100 and a standard deviation of 15, so 85 to 115 is the range within one standard deviation and covers about two thirds of people. The other ranges listed fall in the mildly or more seriously below-average bands.

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