给定一个离散分布，如何绘制 cdf？

Question

给出一个离散分布X = [2,1,5] ，权重W = [0.5,0.2,0.3]如何在 r 中绘制该分布的 cdf？

Answer 1

也许这就是你想要的：

xx <- sort(x)
WW <- cumsum(W[order(x)])
plot(xx,WW,type="s",col = 2, xlab = "x",ylab = "p(x)")
points(xx,WW,col = 4)