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From |
Jeph Herrin <junk@spandrel.net> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: AW: Area under a percentile point |

Date |
Tue, 03 Feb 2009 09:55:47 -0500 |

What you want is a bit strange, but here is how I would do it: sort myvar keep if _n<0.75*_N hope this helps, Jeph zeynep elitaş wrote:

Thanks for help, but this does not solve my problem. As a simple example, lets assume we have a data set containing five 6's and five 7's. so the sample size is 10. Now if I wanted to keep the data values below the 75 th percentile, I would roughly have 7 observations remaining. However, following your suggestion I end up keeping all the observations. Thanks Zeynep Elitas 2009/2/3 Martin Weiss <martin.weiss1@gmx.de>:<> Let`s keep those below the 75 percentile of generated normal deviates... ************* clear* set obs 1000 generate x=rnormal() _pctile x, p(75) keep if x<=r(r1) ************* HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von zeynep elitas Gesendet: Dienstag, 3. Februar 2009 14:28 An: statalist@hsphsun2.harvard.edu Betreff: st: Area under a percentile point I have a simple question which I do not have the answer for. Is there a way to tell Stata to keep the data under a certain percentile point and drop the rest? This is important since in my data a percentile point has often the same value as the ones below and over it. Thanks Zeynep Elitaş * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/* * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

* * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: AW: Area under a percentile point***From:*zeynep elitaş <zelitas@gmail.com>

**AW: st: AW: Area under a percentile point***From:*"Martin Weiss" <martin.weiss1@gmx.de>

**References**:**st: Area under a percentile point***From:*zeynep elitaş <zelitas@gmail.com>

**Re: st: AW: Area under a percentile point***From:*zeynep elitaş <zelitas@gmail.com>

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