QuestionFind how many standard deviations above the mean a person with a $1 \mathrm{Q}$ of 130 scores.

Studdy Solution

STEP 1

Assumptions1. The person's IQ score is130. The normative mean IQ score is1003. The standard deviation for IQ scores is15

STEP 2

First, we need to calculate how many standard deviations the person's score is above the mean. We can do this by subtracting the mean from the person's score and then dividing by the standard deviation.
$Number\, of\, standard\, deviations = \frac{Person's\, score - Mean\, score}{Standard\, deviation}$

STEP 3

Now, plug in the given values for the person's score, the mean score, and the standard deviation to calculate the number of standard deviations.
$Number\, of\, standard\, deviations = \frac{130 -100}{15}$

STEP 4

Calculate the number of standard deviations.
$Number\, of\, standard\, deviations = \frac{130 -100}{15} =2$ The person's score is2 standard deviations above the normative mean.

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