Q. 144.2( 62 Votes )

IQ of a person is

Answer :

Chronical age = CA = 12 years


IQ for age group of 12 is 80 ≤ IQ ≤ 140.


Let MA denote Mental Age


80 ≤ IQ ≤ 140


Putting





9.6 ≤ MA ≤ 16.8


Range of mental age of the group of 12 years old children is


9.6 ≤ MA ≤ 16.8


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