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File: fitdistr.R
## a quick check on vcov for fitdistr (from 7.3-6/7) library(MASS) options(digits=4) set.seed(1) x <- rnorm(100) fit <- fitdistr(x, "normal") fit vcov(fit) x <- rlnorm(100) fit <- fitdistr(x, "lognormal") fit vcov(fit) x <- rpois(100, 4.5) fit <- fitdistr(x, "poisson") fit vcov(fit) x <- rexp(100, 13) fit <- fitdistr(x, "exponential") fit vcov(fit) x <- rgeom(100, 0.25) fit <- fitdistr(x, "geometric") fit vcov(fit)