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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: RE: Re: statalist-digest V4 #3783 |

Date |
Mon, 12 Jul 2010 17:55:53 +0100 |

There is no problem except one of understanding. A density is not a probability and so may easily exceed 1. Consider x that is uniform on [0, 0.5]. The density must integrate to 1 over this interval and clearly must also be constant. No calculus is needed in this example as area under density function = 1 = Constant density of ? * length of support of 0.5. which can be solved to get a density of 2. Nick n.j.cox@durham.ac.uk Katja Hillmann I used the command kdensity in order to calculate the density of fractions (e.g. number of longterm unemployed on total unemployment). Thus I try to calculate the denisty of values less than 1. However, the values of the densities Stata provided are all greater than 1. Where is the problem? Does Stata have problems in calculating distributions of variables within an intervall of 0 and 1? * * 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/

**References**:**st: Re: statalist-digest V4 #3783***From:*Katja Hillmann <katja.hillmann@wiso.uni-hamburg.de>

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