RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
THE SCIENTIFIC METHOD AND DESCRIPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0
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+2
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-2
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30
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Detailed explanation-1: –If IQ has a mean of 100 and a standard deviation of 15, what z score corresponds to a 130? (130-100)/15=2.
Detailed explanation-2: -Example: IQ Scores IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. About 68% of individuals have IQ scores in the interval 100 ± 1 ( 15 ) = [ 85, 115 ] .
Detailed explanation-3: -115 to 129: Above average or bright. 130 to 144: Moderately gifted. 145 to 159: Highly gifted. 160 to 179: Exceptionally gifted.
Detailed explanation-4: -Examples of IQ scores (If Mean = 100, Standard Deviation = 15) Someone scored = 131. 1 Standard Deviation = 85 and 115 = 68% (score falls within 68% of data) 2 Standard Deviations = 70-85 and 115-130 = 95% (score falls within 95% of data)