Nothing
test_that("Inverse Exponential distribution", {
dist <- dist_inverse_exponential(5)
expect_equal(format(dist), "InvExp(5)")
# Require package installed
skip_if_not_installed("actuar", "2.0.0")
# quantiles
expect_equal(quantile(dist, 0.1), actuar::qinvexp(0.1, 5))
expect_equal(quantile(dist, 0.5), actuar::qinvexp(0.5, 5))
# pdf
expect_equal(density(dist, 0), actuar::dinvexp(0, 5))
expect_equal(density(dist, 3), actuar::dinvexp(3, 5))
# cdf
expect_equal(cdf(dist, 0), actuar::pinvexp(0, 5))
expect_equal(cdf(dist, 3), actuar::pinvexp(3, 5))
# F(Finv(a)) ~= a
expect_equal(cdf(dist, quantile(dist, 0.4)), 0.4, tolerance = 1e-3)
# stats
expect_equal(mean(dist), NA_real_) # dput(actuar::minvexp(1, 5))
expect_equal(variance(dist), NA_real_) # dput(actuar::minvexp(2, 5) - actuar::minvexp(1, 5)^2)
})
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