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QUANTILES: Stata module to categorize by quantiles

Author

Listed:
  • Rafael Guerreiro Osorio

    (International Poverty Centre/UNDP)

Programming Language

Stata

Abstract

quantiles creates a new variable (newvar) that categorizes varname by its quantiles. It differs from xtile because the categories are defined by the ideal size of the quantile rather than by the cutpoints, therefore yielding less unequaly sized categories when the cutpoint value is frequent, when using weights or when the number of observations in the dataset is not a product of the number of quantiles. It may not work properly on small datasets or if calculated for small groups. If the number of observations in the dataset or group is small, tabulate newvar afterwards to check the results.

Suggested Citation

  • Rafael Guerreiro Osorio, 2007. "QUANTILES: Stata module to categorize by quantiles," Statistical Software Components S456856, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s456856
    Note: This module should be installed from within Stata by typing "ssc install quantiles". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
    as

    Download full text from publisher

    File URL: http://fmwww.bc.edu/repec/bocode/q/quantiles.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/q/quantiles.hlp
    File Function: help file
    Download Restriction: no
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