that sounds like exactly what I want. thank you!
Florence
On Mon, 25 Jul 2005 19:32:16 -0400
Nick Winter <[email protected]> wrote:
Assuming your variable is mpg, and your scalar is 20. Then how about something like:
count if mpg>20
local a = r(N)
count if mpg<20
local b = r(N)
count if mpg==20
local e = r(N)
di (`b'+`e'/2) / (`a'+`b'+`e')
That is, count how many observations are below s, how many above, and how many are equal. Then
the percentile is just the number below, and half of the ties, over the total N.
--Nick Winter
At 06:46 PM 7/25/2005, you wrote:
Hi, I have a question regarding percentiles that I've been having some trouble with...suppose
that you have a variable x, and you have a scalar s, and you'd like to know at about what
percentile of the x variable the s scalar falls. For instance, suppose x=1,2,3,...,1000. Then
if you have s=20, it should be assigned the percentilie value of the 2nd percentile. Is there a
way to do this easily in stata? (I wanted to assign the scalar a n approximate percentile EVEN IF
IT'S NOT A VALUE in the variable itself so it can't be located in there) Everything I could
think of would take quite a while.
Thank you for your help,
Florence
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--------------------------------------------------------
Nicholas Winter 607.255.8819 t
Assistant Professor 607.255.4530 f
Department of Government [email protected] e
308 White Hall falcon.arts.cornell.edu/nw53 w
Cornell University
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