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Measurement of Intelligence | IQ Test & History

The mean I.Q. (intelligence quotient) of a large number of children of age 14 was 100 and the standard deviation 16. Assuming that the distribution was normal, find (i) What % of the children had I.Q. under 80 ? (ii) Between what limits the I.QS of the middle 40 % of the children lay ? (iii) What % of the children had I.Q.s within the range μ±1.960 ? | Numerade

Answered: The data below is a frequency distribution of the Intelligence Quotient (IQ) of 200 students taking up Behavioral Psychology and Business Statistics in a… | bartleby