[R] z and p

[Berton Gunter]

qnorm

-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
 
"The business of the statistician is to catalyze the scientific learning
process."  - George E. P. Box
 
 

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Adrian Dusa
> Sent: Tuesday, March 15, 2005 8:59 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] z and p
> 
> 
> 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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