R语言学习（四）——泊松分布

dpois(x, lambda, log = FALSE)
ppois(q, lambda, lower.tail = TRUE, log.p = FALSE)
qpois(p, lambda, lower.tail = TRUE, log.p = FALSE)
rpois(n, lambda)
lower.tail = FALSE允许在默认情况下获得更精确的结果，lower.tail = TRUE将返回1

假设检验

poisson.test(x, T = 1, r = 1,alternative = c(“two.sided”, “less”, “greater”), conf.level = 0.95)

例：