GROWTH DEVELOPMENT CHILD
MEASUREMENT OF INTELLIGENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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25
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55
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68
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96
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Detailed explanation-1: -Approximately 95% of the population has IQ scores between 70 and 130. Approximately 99.7% of the population has IQ scores between 55 and 145.
Detailed explanation-2: -Most people you meet are probably average, and a few are extraordinarily smart. Just 2.2 percent have an IQ of 130 or greater. What’s fascinating is that people who score well on one of the tests tend to score well on them all.
Detailed explanation-3: -e.g. IQ is normally distributed (mean = 100, SD = 15). 68% of people have IQs between 85 and 115 (100 +/-15). 95% have IQs between 70 and 130 (100 +/-(2*15). 99.7% have IQs between 55 and 145 (100 +/-(3*15).
Detailed explanation-4: -For example, given that the IQ scores have a mean of 100 and a standard deviation of 15, one can conclude that only about 2.3% of the population have an IQ of 130 or higher.
Detailed explanation-5: -A gifted child’s IQ will fall within these ranges: Mildly gifted: 115 to 130. Moderately gifted: 130 to 145. Highly gifted: 145 to 160.