# how well did i do? (1 Viewer)

#### Premus

##### Member
im pretty sure i got around 85 ish / 120
is that alright, in comparison to everyone ?

Thanks

#### gabn

##### Member
hmm i probably didn't even answer that much of the paper.

but there are alot of smart people on this forum and they put my exam to shame many times over i hope the other 3500 people who sat the exam struggled... more than these guys

#### jumb

##### mr jumb
You did crap. Go kill yourself to make me look better.

#### Giant Lobster

##### Active Member
thats above average compared to the state i'd say
most likely in the next standard deviation
good, but not terribly good

#### Trev

##### stix
huh we dont do gen. math, should we even wat kno standard deviation means? lol

#### gordo

##### Resident Jew
one standard deviation above the mean, means u are in the top 85% of the canditure, 2 standard deviations means the top 95% and 3 means the top 1%

the standard deviation for 4u is usually about 18 and the mean about 55 / 120 raw

so if u got above 77 out of 120 raw u will get above 85% aligned, if u get above 95 / 120, u will get above 95% and if u get above 113 / 120 u will get 99%

i may have got my bell curve mixed up

#### SeDaTeD

##### Member
You mean, the top 15% and top 5%, or, you beat 85% and 95%.

#### Kelvy

##### Member
don't they mean the same thing...? Unless u mean 85% as a mark and 95% as a mark, and not the amount of people.....

#### SeDaTeD

##### Member
Well, using the number of standard deviations away from the mean of a normal distribution you can work out your rank, or percentile, with some statistics formulae. About 68% of the candidature would be within 1 standard deviation of the mean, 95% within 2 and 99% within 3. Taking what gordo said, that should mean that 68% would have got within 55+/- 18, 95% within 55 +/- 36 and 99% within 55 +/- 54. Hmm, those who got above 110 would be ranked bloody high.

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