This is a short description of the codes needed to draw a histogram with the density distribution.
An example plotting of histogram with normal density curve
set.seed(123)
dataF <- data.frame(hb2 = rnorm(500, mean = 25, sd = 5))
dataF%>%
ggplot(aes(x = hb2))+
geom_histogram(
aes(y = after_stat(density)), bins=10, fill = "snow", col = "red") +
stat_function(
fun = dnorm,
args = list(mean = mean(dataF$hb2, na.rm=T),
sd = sd(dataF$hb2)), col = "blue",
linewidth = 1.5)+
theme_bw()
