what is GPA for top 5% for 3.3 median/3.6 10%?

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timertimer61
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what is GPA for top 5% for 3.3 median/3.6 10%?

Postby timertimer61 » Wed Jun 15, 2011 11:45 pm

median is 3.3
top 10% is 3.6

what is top 5%?

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thesealocust
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Re: what is GPA for top 5% for 3.3 median/3.6 10%?

Postby thesealocust » Wed Jun 15, 2011 11:47 pm

3.68554688.

Give or take.

timertimer61
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Re: what is GPA for top 5% for 3.3 median/3.6 10%?

Postby timertimer61 » Wed Jun 15, 2011 11:53 pm

how did you calculate?
damn thats high.

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thesealocust
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Re: what is GPA for top 5% for 3.3 median/3.6 10%?

Postby thesealocust » Wed Jun 15, 2011 11:56 pm

timertimer61 wrote:how did you calculate?


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timertimer61
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Re: what is GPA for top 5% for 3.3 median/3.6 10%?

Postby timertimer61 » Wed Jun 15, 2011 11:59 pm

thesealocust wrote:
timertimer61 wrote:how did you calculate?


--LinkRemoved--

how do you use that? sorry. newb here.

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thesealocust
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Re: what is GPA for top 5% for 3.3 median/3.6 10%?

Postby thesealocust » Thu Jun 16, 2011 12:03 am

timertimer61 wrote:
thesealocust wrote:
timertimer61 wrote:how did you calculate?


--LinkRemoved--

how do you use that? sorry. newb here.


Find the Z-score for the 90th percentile, which is 1.28. That means 1.28 standard deviations from the mean is the 90th percentile. We also know that a 3.6 is the 90th percentile, and thus 0.3 GPA points is 1.28 standard deviations, which means the standard deviation has to be 0.234375. Using that we simply find the Z-score for 95%, or 1.645. 1.645 standard deviations would be 9th percentile, so that's 1.645 times 0.234375.

NBD.

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dr123
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Re: what is GPA for top 5% for 3.3 median/3.6 10%?

Postby dr123 » Thu Jun 16, 2011 12:04 am

thesealocust wrote:
timertimer61 wrote:
thesealocust wrote:
timertimer61 wrote:how did you calculate?


--LinkRemoved--

how do you use that? sorry. newb here.


Find the Z-score for the 90th percentile, which is 1.28. That means 1.28 standard deviations from the mean is the 90th percentile. We also know that a 3.6 is the 90th percentile, and thus 0.3 GPA points is 1.28 standard deviations, which means the standard deviation has to be 0.234375. Using that we simply find the Z-score for 95%, or 1.645. 1.645 standard deviations would be 9th percentile, so that's 1.645 times 0.234375.

NBD.


GTFO with that math bullshit.

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thesealocust
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Re: what is GPA for top 5% for 3.3 median/3.6 10%?

Postby thesealocust » Thu Jun 16, 2011 12:06 am

dr123 wrote:GTFO with that math bullshit.


A wizard did it.




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