R help - Mar 2005 - z and p

Yes, it's called qnorm().

Andy
> From: Adrian Dusa
> 
> Dear useRs,
> 
> I use pnorm to calculate the area under the normal curve to 
> the left of z. 
> Now, is there a function which provides the z value given a 
> certain area?
> I wrote a function which finds it in about 20 iterations, but 
> it seems to me 
> not the best solution; I'm just curios if there is an already 
> built function.
> 
> Regards,
> Adrian
> 
> -- 
> Adrian Dusa
> Romanian Social Data Archive
> Bd. Schitu Magureanu nr.1
> Tel./Fax: +40 21 3126618 \
>               +40 21 3120210 / int.101
> 
> 
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> 
>

Dear useRs,

I use pnorm to calculate the area under the normal curve to the left of z. 
Now, is there a function which provides the z value given a certain area?
I wrote a function which finds it in about 20 iterations, but it seems to me 
not the best solution; I'm just curios if there is an already built
function.

Regards,
Adrian

-- 
Adrian Dusa
Romanian Social Data Archive
Bd. Schitu Magureanu nr.1
Tel./Fax: +40 21 3126618 \
              +40 21 3120210 / int.101


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