GROWTH DEVELOPMENT CHILD
MEASUREMENT OF INTELLIGENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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approximately one standard deviation above the mean
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approximately one standard deviation below the mean
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approximately two standard deviation avoe the mean
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approximately two standard deviations below the mean
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in a variable position it would depend on the age of the respondent
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Detailed explanation-1: -70 to 84: Borderline mental disability. 85 to 114: Average intelligence. 115 to 129: Above average or bright. 130 to 144: Moderately gifted. 145 to 159: Highly gifted.
Detailed explanation-2: -➢ Transform Matt’s score (85) into a z score (z = – 1) ➢ Use the z score table to find the area to the left of this score (0.1587) ➢ The probability of having an IQ score that is 85 or lower is approximately 16% 3) Find the percentage of the population that has IQ scores between 85 and 111.
Detailed explanation-3: -If you have an IQ score of 115 (100 + 15), then you are 1 standard deviation above the mean (z = +1). If you have an IQ score of 85 (100 – 15), then you are 1 standard deviation below the mean (z =-1). To put this in perspective, we need to know the area under the curve between the IQ scores of 85 and 115.
Detailed explanation-4: -The mean, or average, IQ is 100. Standard deviations, in most cases, are 15 points. The majority of the population, 68.26%, falls within one standard deviation of the mean (IQ 85-115).