Calculates the RCBD efficiency ratio for a linear model with one main factor and one blocking factor. Values greater than 1 indicate that the RCBD has greater efficiency compared to a CRD.
eff.rbd(lm)An object of class lm. The blocking factor must be called "block".
Kutner, M. H., C. J. Nachtsheim, J. Neter, and W. Li (2005) Applied Linear Statistical Models. McGraw-Hill Irwin.