Rsq.ad {qpcR} | R Documentation |
Calculates the adjusted R-square value for objects of class nls
, lm
, glm
, drc
or any other models from which fitted
, residuals
and coef
can be extracted.
Rsq.ad(object)
object |
a fitted model. |
Calculates the adjusted R^2 by
R_{adj}^2 = 1 - frac{n - 1}{n - p} * (1 - R^2)
with n = sample size, p = number of regressors and R^2 = R-square value.
The adjusted R-square value of the fit.
Andrej-Nikolai Spiess
## single model m <- pcrfit(reps, 1, 2, l5) Rsq.ad(m) ## compare different models with increasing ## number of parameters ml <- lapply(list(l3, l4, l5), function(x) pcrfit(reps, 1, 2, x)) sapply(ml, function(x) Rsq.ad(x))