[R] dnorm and qnorm

Edwin Sun csun at cfr.msstate.edu
Fri Nov 12 23:35:04 CET 2010

Hello all,

I have a question about basic statistics.  Given a PDF value of 0.328161,
how can I find out the value of -0.625 in R? It is like reversing the dnorm
function but I do not know how to do it in R. 

> pdf.xb <- dnorm(-0.625) 

> pdf.xb 
[1] 0.328161

> qnorm(pdf.xb)
[1] -0.444997

> pnorm(pdf.xb)
[1] 0.628605

Many thanks,


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