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iq question
Message posted by ron (via 24.4.252.177) on March 29, 2001 at 12:20 PM (ET)
iq test scores are normally distribution with a mean of 105 and a standard deviation of 12. if your iq is in the 17th percentile. How do you figure out what your iq is?
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Re: iq question
Message posted by Bill (via 192.231.71.108) on March 30, 2001 at 2:59 PM (ET)
The formula for a z score is z=(x-x(bar))/sd. After a z is calculated go to http://davidmlane.com/hyperstat/z_table.html and enter a z to "see" the percentile placement. You can work the backwards, so to speak, and arrive at the answer.
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