, Volume 49, Issue 1, pp 133–141 | Cite as

On approximate confidence intervals for measures of concordance

  • Albert D. Palachek
  • William R. Schucany


The use ofU-statistics based on rank correlation coefficients in estimating the strength of concordance among a group of rankers is examined for cases where the null hypothesis of random rankings is not tenable. The studentizedU-statistics is asymptotically distribution-free, and the Student-t approximation is used for small and moderate sized samples. An approximate confidence interval is constructed for the strength of concordance. Monte Carlo results indicate that the Student-t approximation can be improved by estimating the degrees of freedom.

Key words

Concordance confidence intervals jackknife rank correlation U-Statistics 


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Copyright information

© The Psychometric Society 1984

Authors and Affiliations

  • Albert D. Palachek
    • 1
  • William R. Schucany
    • 2
  1. 1.University of CincinnatiUSA
  2. 2.Department of StatisticsSouthern Methodist UniversityDallas

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