Confidence intervals on the linear model coefficients are obtained for
each
lm component of
object and organized into a three
dimensional array. The first dimension corresponding to the names
of the
object components. The second dimension is given by
lower
,
est., and
upper corresponding,
respectively, to the lower confidence limit, estimated coefficient,
and upper confidence limit. The third dimension is given by the
coefficients names.
USAGE:
intervals(object, level, pool)
REQUIRED ARGUMENTS:
object
an object inheriting from class
lmList, representing
a list of
lm objects with a common model.
OPTIONAL ARGUMENTS:
level
an optional numeric value with the confidence level for
the intervals. Defaults to 0.95.
pool
an optional logical value indicating whether a pooled
estimate of the residual standard error should be used. Default is
attr(object, "pool").
VALUE:
a three dimensional array with the confidence intervals and estimates
for the coefficients of each
lm component of
object.
SEE ALSO:
,
EXAMPLES:
fm1 <- lmList(distance ~ age | Subject, Orthodont)
intervals(fm1)