Type I error probabilities of the Wilcoxon-Mann-Whitney test and student T test altered by heterogeneous variances and equal sample sizes

Perceptual and Motor Skills

Volumn 88, Issue 2, 1999, Pages 556-558

  Zimmerman, Donald W ^a  

^a NONE   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0347600603     PISSN: 00315125     EISSN: None     Source Type: Journal    
DOI: 10.2466/pms.1999.88.2.556     Document Type: Article

References (4)

1. HOPKINS, K. D., GLASS, G. V., & HOPKINS, B. R. (1987) Basic statistics for the behavioral sciences. (2nd ed.) Englewood Cliffs, NJ: Prentice-Hall.
2. OVERALL, J. E., ATLAS, R. S., & GIBSON, J. M. (1995) Tests that are robust against variance heterogeneity in kx2 designs with unequal cell frequencies. Psychological Reports, 76, 1011-1017.
3. ZIMMERMAN, D. W. (1996) A note on homogeneity of variance of scores and ranks. Journal of Experimental Education, 54, 351-362.
4. ZIMMERMAN, D. W., & ZUMBO, B. D. (1993) Rank transformations and the power of the Student t test and the Welch t′ test for non-normal populations with unequal variances. Canadian Journal of Experimental Psychology, 47, 523-539.