如何在 R 中 plot 离散密度 function

Question

graph "density function" if I have for example X = 12, 13, 14 with probabilities of 0.25, 0.25, 0.50, all on the same graph? each number has the mentioned probability.

Answer 1

Yes. Many ways to do this. barplot() is one:

dat <- data.frame(
    x = 12:14,
    p = c(0.25, 0.25, 0.5)
)

barplot(p~x, data=dat)