.\" -*- nroff -*- generated from .Rd format
.BG
.FN pooledSD
.TL
Extract Pooled Standard Deviation
.DN
The pooled estimated standard deviation is obtained by adding together
the residual sum of squares for each non-null element of
`object', dividing by the sum of the corresponding residual
degrees-of-freedom, and taking the square-root.
.CS
pooledSD(object)
.RA
.AG object
an object inheriting from class `lmList'.
.RT
the pooled standard deviation for the non-null elements of
`object', with an attribute `df' with the number of
degrees-of-freedom used in the estimation.

.SA
`lmList', `lm'
.EX
fm1 <- lmList(Orthodont)
pooledSD(fm1)
.KW models
.WR
