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From |
Rod Hunter <info@hunarch.com.au> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: Percentiles: Identify of smallest observation closetto percentile value |

Date |
Mon, 03 Feb 2003 21:41:47 +1100 |

Thanks for responding Nick.

A simple eg. will suffice.

Obs. Var1

----------

1 10

2 9

3 8

4 7

-----------

I would like Stata to tell me the value of the observation that is at or below the 75th percentile point, and to yield the identity (or identities) of the observation(s).

Rod Hunter

Nick Cox wrote:

Rod HunterI would be grateful if a StataList member could tell me how I can efficiently indentify the observation that is the smallest observation closest to a percentile value? Similarly, how can I generate a new variable that is the smallest observation closest to the percentile?There is some fuzziness about this problem because of the possibility of ties. But even when there is a unique answer, do you want to put a single value into a variable? It might help if you were to use a commonly accessible data set -- e.g. the auto data -- to give examples of what you want to do. Nick n.j.cox@durham.ac.uk * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

* * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**RE: st: RE: Percentiles: Identify of smallest observation closet to percentile value***From:*"Ronnie Babigumira" <ronnie.babigumira@ios.nlh.no>

**RE: st: RE: Percentiles: Identify of smallest observation closet to percentile value***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**References**:**st: RE: Percentiles: Identify of smallest observation closet to percentile value***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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