Provides directly interpretable estimated coefficients for four models in connection with the twogroup straight line ANCOVA problem: (A) the full model, which requires the fitting of two intercepts and two slopes; (B) a reduced model, which requires the fitting of a single intercept and single slope; (C) a reduced model, which requires the fitting of two separate intercepts and a single, common slope; and (D) a reduced model, which requires the fitting of a single, common intercept and two separate slopes. The summary function provides tests of fit for the (null) hypotheses of: (1) equivalent data sets, (2) equivalent slopes, and (3) equivalent intercepts.
Package details 


Author  W. Gregory Alvord [aut, cre], Nick Carchedi [aut] 
Date of publication  20161205 18:28:48 
Maintainer  W. Gregory Alvord <[email protected]> 
License  GPL2 
Version  0.1 
Package repository  View on CRAN 
Installation 
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