The posterior_interval function computes Bayesian posterior uncertainty
intervals. These intervals are often referred to as credible
intervals, for more details see rstanarm
posterior_interval(mat, prob = 0.9, ...)A matrix with two columns and as many rows as model parameters (or
the subset of parameters specified by pars and/or
regex_pars). For a given value of prob, \(p\), the columns
correspond to the lower and upper 100*p% interval limits and have the
names \(100\alpha/2\) and \(100(1 - \alpha/2)\)%, where \(\alpha
= 1-p\). For example, if prob=0.9 is specified (a 90%
interval), then the column names will be "5%" and "95%",
respectively.
a matrix containing the posterior samples of a fitted parameter
A number \(p \in (0,1)\) indicating the desired
probability mass to include in the intervals. The default is to report
90% intervals (prob=0.9) rather than the traditionally used
95%.
Further arguments passed to posterior_intervals.
Asael Alonzo Matamoros