How to fit multiple probability density function in one graph

Comede_way · April 12, 2023, 8:21am

@technocrat Never mind. Here is the new post. Thank for your help.

How could I go on with the plot? General

Hi, Continuous variables are divided and frequencies counted in different interval, histograms are drawn, and probability density curves are fitted. The horizontal coordinates are of the form of different intervals [a,b). Now it seems that the graph I made has problems with both the horizontal coordinates ( no scale lines)and vertical coordinates. You could also use other data to show your opinion. Thank you for your help in advance. set.seed(123) data <- rnorm(1000, mean = 50, sd = 10) # 将x分为5个区间 cuts <- cut(data, breaks = c(0, 20, 40, 60, 80, 100), right = FALSE) # 计算各个区间的频次 freqs <- table(cuts) # 绘制直方图和概率密度曲线 barplot(freqs, names = c("[0,20)", "[20,40)", "[40,60)", "[60,80)", "[80,…