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Any statisticians out there?? Where would a 3.81 fall?
Posted: Fri Feb 05, 2010 6:07 pm
by UnKnO
I am mathematically disabled. Where would a 3.81 fall on a cuve (what %) with the following data points? Any help would be much appreciated.
GPA 3.81
25% - 3.358
33% - 3.262
50% - 3.071
Re: Any statisticians out there?? Where would a 3.81 fall?
Posted: Fri Feb 05, 2010 6:12 pm
by 09042014
UnKnO wrote:I am mathematically disabled. Where would a 3.81 fall on a cuve (what %) with the following data points? Any help would be much appreciated.
GPA 3.81
25% - 3.358
33% - 3.262
50% - 3.071
No way to know unless we know the distribution of the curve. But I suspect its really fucking high.
If its Gaussian solve the cdf

Re: Any statisticians out there?? Where would a 3.81 fall?
Posted: Fri Feb 05, 2010 6:13 pm
by jackassjim
UnKnO wrote:I am mathematically disabled. Where would a 3.81 fall on a cuve (what %) with the following data points? Any help would be much appreciated.
GPA 3.81
25% - 3.358
33% - 3.262
50% - 3.071
You find out what *tile position (median, quartiles, etc.) you're in without having access to all the other GPAs in the population (edit: or as the above poster says, you need info on the distribution). For instance, most of the top 25% might be clustered in one chunk in the 3.85-4 range, which means you would end up close to 25%. In contrast, if all those in the top 25% are clustered near the 3.3 threshold, then you might end up being top 1%. Bottom line: no one can answer your question.
Re: Any statisticians out there?? Where would a 3.81 fall?
Posted: Fri Feb 05, 2010 8:10 pm
by thesealocust
edit: never mind
Re: Any statisticians out there?? Where would a 3.81 fall?
Posted: Fri Feb 05, 2010 9:07 pm
by ScaredWorkedBored
Depends if your school ranks current class or uses rolling tables. It's probably ~ Top 5% or so on a distribution (see thesealocust math), but in a given class with a B median, you could be in the top few people. No curve requires that someone get straight A's; it's entirely possible for 1 or no people to do that in a semester.
You're just too high to really say with statistical certainty.