# [R] problem for wtd.quantile()

Liaw, Andy andy_liaw at merck.com
Thu Mar 16 15:15:49 CET 2006

```I don't know why using the fractional weights and normwt=TRUE gives that

> wtd.quantile(x, 5:1)
0%  25%  50%  75% 100%
1    1    2    3    5

Andy

From: Jing Yang
>
> Actually, I am looking for this result:
>   0%  25%  50%  75% 100%
>    1    1    2    3    5
> -----------------------
> y <- c(1,1,1,1,1,2,2,2,2,3,3,3,4,4,5)
> quantile(y)
> -----------------------
>
> Since x with weights w is equivalant to y.
>
> ======= At 2006-03-16, 14:34:14 you wrote: =======
>
> >Perhaps you're looking for this?
> >
> >> ?wtd.quantile
> >> wtd.quantile(x,weights=w, normwt=TRUE)
> >  0%  25%  50%  75% 100%
> >   1    2    2    3    5
> >
> >Andy
> >
> >From: Jing Yang
> >>
> >> Dear R-users,
> >>
> >> I don't know if there is a problem in wtd.quantile (from
> >> library "Hmisc"):
> >> --------------------------------
> >> x <- c(1,2,3,4,5)
> >> w <- c(0.5,0.4,0.3,0.2,0.1)
> >> wtd.quantile(x,weights=w)
> >> -------------------------------
> >> The output is:
> >>   0%  25%  50%  75% 100%
> >> 3.00 3.25 3.50 3.75 4.00
> >>
> >> The version of R I am using is: 2.1.0
> >>
> >> Best,Jing
> >>
> >>
> >
> >
> >-------------------------------------------------------------
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