Hi,
values in parentesis below the estimate of a parameter
is the standard deviation of parameter, that's a
measure of variability.
Regards.
Vito
> set.seed(123)
> x <- rgamma(100, shape = 5, rate = 0.1)
> fitdistr(x, "gamma")
shape rate
6.45947303 0.13593172
(0.89052006) (0.01948648)
^^^^^^^ ^^^^^^^
From: Mark Miller <mmiller <at> nassp.uct.ac.za>
Subject: [R] Fitdistr()
Newsgroups: gmane.comp.lang.r.general
Date: 2005-11-17 07:58:10 GMT (4 hours and 2 minutes
ago)
When using fitdistr() with the exponential, log-normal
and beta distributions,
you get the relevent rate, mean, standard deviation,
shape1 and shape2 but
you get a number bellow those that are in () and I was
wandering what exactly
those numbers represent and how they relate to the
data.
Many thanks
Mark Miller
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