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Pairwise Multiple Comparison Procedures with Unequal N’s and/or Variances: A Monte Carlo Study

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  • Paul A. Games
  • John F. Howell

Abstract

Three different methods for testing all pairs of yȳ k , - yȳ k’ were contrasted under varying sample size (n) and variance conditions. With unequal n’s of six and up, only the Behrens-Fisher statistic provided satisfactory control of both the familywise rate of Type I errors and Type I error rate on each contrast. Satisfactory control with unequal n’s of three and up is dubious even with this statistic.

Suggested Citation

  • Paul A. Games & John F. Howell, 1976. "Pairwise Multiple Comparison Procedures with Unequal N’s and/or Variances: A Monte Carlo Study," Journal of Educational and Behavioral Statistics, , vol. 1(2), pages 113-125, June.
    • Handle: RePEc:sae:jedbes:v:1:y:1976:i:2:p:113-125
    DOI: 10.3102/10769986001002113
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    Cited by:

    1. Gottschalk, Sabrina A. & Mafael, Alexander, 2017. "Cutting Through the Online Review Jungle — Investigating Selective eWOM Processing," Journal of Interactive Marketing, Elsevier, vol. 37(C), pages 89-104.
    2. Diamantopoulos, Adamantios & Davydova, Olga & Arslanagic-Kalajdzic, Maja, 2019. "Modeling the role of consumer xenocentrism in impacting preferences for domestic and foreign brands: A mediation analysis," Journal of Business Research, Elsevier, vol. 104(C), pages 587-596.
    3. Mario Hasler, 2016. "Heteroscedasticity: multiple degrees of freedom vs. sandwich estimation," Statistical Papers, Springer, vol. 57(1), pages 55-68, March.
    4. Peter Z. Schochet, "undated". "Multi-Armed RCTs: A Design-Based Framework," Mathematica Policy Research Reports eedf2eac4d4c4d8e869052c1d, Mathematica Policy Research.
    5. Giuseppe Arbia & Maria Lucia Pace, 2018. "Testing inequality of opportunities in Italy using the ANOVA framework," Empirical Economics, Springer, vol. 55(1), pages 297-322, August.

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