A Graphical Multiple Comparisons Procedure for Several Standard Deviations
نویسندگان
چکیده
A new graphical procedure for multiple comparisons of k standard deviations is provided. As a test for homogeneity of variances, the new procedure has similar type I and type II error properties as the Brown and Forsythe (1974) version of the Levene (1960) test, W50. The graphical display associated with the multiple comparisons test, however, provides a useful visual tool for screening samples with different standard deviations.
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