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24-11-2018
Social Studies

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William Stern's formula for the intelligence quotient was mental age/chronological age Ã— 100. What is the IQ of a 12-year-old with a mental age of 9?
a. 125
b. 135
c. 75
d. 85

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24-11-2018

William Stern's formula for the intelligence quotient was mental age/chronological age Ã— 100. What is the IQ of a 12-year-old with a mental age of 9?

c. 75

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