Artificial data story
Last edited on 27th April, 2004 by gs/ gs
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A small artificial data set to illustrate calculations for analysis of covariance.
The question is whether the response variable Y has different dsistribution in two groups. Besides a possible group effect, the response variable may be influenced by a covariable X.
K=2 groups (treatment and control)
J=1 regressor variable X
Scatterplot of response versus regressor, by group
Data file: artificial.data
Source: D. Quade: Nonparametric Analysis of Covariance by Matching. Biometrics 28 (1982) 567-611.