How to add a standard normal distribution curve on my histogram?

General
1 
binsim <- rbinom(10000, 20, 0.3)
Xstar <- (binsim - np) / sqrt(npq)
hist(Xstar)

Now I want to add a standard normal distribution curve on my histogram. How to do that?

2

x <- seq(-4., 4., by = .01)
y <- dnorm(x, mean = 0, sd = 1)
plot(x,y, col="blue")

1 Like
3

but I need this standard normal curve being superimposed on my original histogram.

4

See: Adding a "Normal Distribution" Curve to a Histogramm (Counts) with ggplot2

5

Okay, now I figure it out. I use par

6

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