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Re: st: RE: finding a value from a distribution based on percentile


From   Shuaizhang Feng <fengsz@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: finding a value from a distribution based on percentile
Date   Mon, 19 Mar 2007 03:19:03 -0700 (PDT)

Thanks, patrick:

The real situation I am facing is: I have a variable y
which has certain values missing, I would like to
impute the missing values based on a predicted
percentil.  So the x variable contains a percentile
that I will use to forecast the y variables for those
missing. 

Example:
y     x
200   .
100   .
.    0.5
.    0.1
234  .

How can I assign a value for those missing y(s) based
on the perceniles from x?

In this example, I guess the y value corresponding to
x=0.5 is 200 and for x=0.1 is 100.  Note I am using
the distribution of y only for those observed.

Thanks.

Shuaizhang
 



--- Patrick Wöhrle Guimarães <probabilidade@gmail.com>
wrote:

>   I think that Shuaizhang would like to calculate
> centile using
> another command that - centile (maybe He has a
> complex design or other
> kind of dataset) - "I know you can calculate the
> percentiles for y
> using "centile", but how do you go the other way?".
> I always use
> centile and I didnt replay because I didnt think
> other way to do this.
> Could you explain better Shuaizhang?
> 
> 
> -- 
> Patrick
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