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From |
Garry Anderson <g.anderson@unimelb.edu.au> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
RE: RE: Re: st: RE: kolmogorov-Smirmov Output |

Date |
Wed, 14 Jan 2009 20:51:57 +1100 |

Hi Claudia, You only need to consider the exact p-value. Your conclusion that the two distributions are not equal to each other is consistent with the p-value. Garry ________________________________ From: owner-statalist@hsphsun2.harvard.edu on behalf of ag86264@studbocconi.it Sent: Wed 14/01/09 20:42 To: statalist@hsphsun2.harvard.edu Subject: RE: Re: st: RE: kolmogorov-Smirmov Output Thanks... So, are my conclusions exact? I do not know if I have to consider the first and the second p-values too.. Why not use the exact p-value, as reported by ksmirnov x, by(group) exact Regards, Garry ________________________________ From: owner-statalist@hsphsun2.harvard.edu on behalf of ag86264@studbocconi.it Sent: Wed 14/01/09 20:17 To: statalist@hsphsun2.harvard.edu Subject: Re: st: RE: kolmogorov-Smirmov Output thanks a lot. So, if my output is, for example, Two-sample Kolmogorov-Smirnov test for equality of distribution functions: Smaller group D P-value Corrected ---------------------------------------------- male: 0.2468 0.002 female: 0.0000 1.000 Combined K-S: 0.2468 0.005 0.003 if a should drow a conlusion, I have to see the p-value 0.005, the row Combined K-S, is it right? So, in this case, if my alpha is 0.05, because p-value is less than 0.05 I reject the null hypotesis.Is it right? Claudia Quoting hind sbihi <sbihi@interchange.ubc.ca>: > Claudia > > I am not sure I fully understand your question. > However, for hypothesis testing, you need to set a critical value at which > you accept or reject the null hypothesis. Let's say this critical value, or > alpha is 0.05. Now, if p-value is less than 0.05 your reject the null > hypothesis (which states that your observed distribution follows a Gaussian > distribution). Conversely, if p>0.05 then you accept the null hypothesis and > consider that your data approximates a Gaussian distribution. > HTH > > Hind > > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of > ag86264@studbocconi.it > Sent: Wednesday, January 14, 2009 12:07 AM > To: statalist@hsphsun2.harvard.edu > Subject: st: kolmogorov-Smirmov Output > > > Hello, > > would someone guide me on how to interpret the output of a two-sided > kolmogorov-Smirnov test? > In order to conclude for the equality or not of the distributions, what > p-value I have to see? As you know, if I perform a test for the > equality of two distributions, I have three rows where the last one is > the combined K-S. My question is if I have to see only this last row > (p-value) in ordwer to drow a conclusion. > > thanks a lot > Claudia > > > > > > * > * 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/ ----- Fine messaggio inoltrato. ----- * * 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/ ----- Fine messaggio inoltrato. -----

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**Follow-Ups**:**Re: RE: Re: st: RE: kolmogorov-Smirmov Output***From:*Neil Shephard <nshephard@gmail.com>

**References**:**Re: st: RE: kolmogorov-Smirmov Output***From:*ag86264@studbocconi.it

**RE: Re: st: RE: kolmogorov-Smirmov Output***From:*ag86264@studbocconi.it

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