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{{StatsPsy}}
 
{{StatsPsy}}
In [[statistics]], a ''' concordant pair''' is a pair of a two-variable (bivariate) observation data-set '''X'''<sub>''1''</sub>,'''Y'''<sub>''1''</sub>} and {'''X'''<sub>''2''</sub>,'''Y'''<sub>''2''</sub>}, where:
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In [[statistics]], a ''' concordant pair''' is a pair of a two-variable (bivariate) observation data-set
   
:<math> \sgn (X_2 - X_1)\ = \sgn (Y_2 - Y_1)\ </math>
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'''Article wouldnt copy over from WP needs attention'''
 
Correspondingly, a ''' discordant pair''' is a pair, as defined above, where
 
 
:<math> \sgn (X_2 - X_1)\ = - \sgn (Y_2 - Y_1)\ </math>
 
 
and the sign function, often represented as '''sgn''', is defined as:
 
 
:<math> \sgn x = \left\{ \begin{matrix}
 
-1 & : & x < 0 \\
 
0 & : & x = 0 \\
 
1 & : & x > 0 \end{matrix} \right. </math>
 
   
 
==See also==
 
==See also==
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==References==
 
==References==
   
*[http://www.utdallas.edu/~herve/Abdi-KendallCorrelation2007-pretty.pdf Kendall rank correlation.]
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* Kendall, M. (1948) ''Rank Correlation Methods'', Charles Griffin & Company Limited
 
* Kendall, M. (1948) ''Rank Correlation Methods'', Charles Griffin & Company Limited
 
* Kendall, M. (1938) "A New Measure of Rank Correlation", Biometrica, 30, 81-89.
 
* Kendall, M. (1938) "A New Measure of Rank Correlation", Biometrica, 30, 81-89.
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* [http://www-groups.dcs.st-and.ac.uk/~history/Biographies/Kendall.html MacTutor: David George Kendall]
 
* [http://www-groups.dcs.st-and.ac.uk/~history/Biographies/Kendall.html MacTutor: David George Kendall]
 
* [http://janus.lib.cam.ac.uk/db/node.xsp?id=EAD%2FGBR%2F0014%2FKNDL Janus: The Papers of Professor David Kendall]
 
* [http://janus.lib.cam.ac.uk/db/node.xsp?id=EAD%2FGBR%2F0014%2FKNDL Janus: The Papers of Professor David Kendall]
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*[http://www.utdallas.edu/~herve/Abdi-KendallCorrelation2007-pretty.pdf Kendall rank correlation.]
   
 
[[Category:Statistics]]
 
[[Category:Statistics]]

Latest revision as of 07:51, January 26, 2007

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In statistics, a concordant pair is a pair of a two-variable (bivariate) observation data-set

Article wouldnt copy over from WP needs attention

See alsoEdit

ReferencesEdit

  • Kendall, M. (1948) Rank Correlation Methods, Charles Griffin & Company Limited
  • Kendall, M. (1938) "A New Measure of Rank Correlation", Biometrica, 30, 81-89.

External linksEdit

{{enWP|Concordant pair}

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