Helmert contrast, Advanced Statistics

Helmert contrast is the contrast often used in analysis of the variance, in which each level of a factor is tested against average of the remaining levels. So, for instance, if three groups are involved of which the ?rst is a control, and the another two healing groups, the ?rst contrast tests control group against the average of the two treatments and the second tests whether the two treatments differ or not.

Posted Date: 7/28/2012 7:08:38 AM | Location : United States

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