[R] pvalues

[Uwe Ligges]

Maya Sanders wrote:
> dear all-
> If I have a vector of numbers (not necessarily
> normally distributed) how can I get the p-value of a
> number in this distribution.  I am interested in the
> "inverse" of 'quantile' .
> thank you-
> Maya
> 


I'm not sure whether I got the point, but my guess is that you are 
trying to count how many observations in a vector x have values less 
than a and divide by the total number of observations in x, e.g.:

  x <- rnorm(20)
  a <- 0
  sum(x < a) / length(x)

Uwe Ligges