R - 如何在boxplot中顯示平均值，中位數，標準差，分位數

Question

有沒有一種方法可以通過使用R來顯示boxplot中的「​​五個值」？

p0.3 = dbinom(0:60, 60, 0.3) 
p0.5 = dbinom(0:60, 60, 0.5) 
p0.8 = dbinom(0:60, 60, 0.8) 
boxplot(p0.3,p0.5,p0.8, names=c("0.3","0.5","0.8"),col=c("red","yellow","blue"),main = "Boxplot of Probability Distribution ", ylab = "Distribution Density", xlab = "Probability") 

Answer 1

我不清楚如果你想繪製符號或值本身。它的第一個，你可以添加一些東西給你繪製這樣的：

abline(h=mean(p0.3), col ="red"); 
points(sd(p0.3), pch=18, col ="red") 

如果是第二個，你可以通過自己的計算這些統計數據，然後添加值文本：

p0.3 = dbinom(0:60, 60, 0.3) 
p0.5 = dbinom(0:60, 60, 0.5) 
p0.8 = dbinom(0:60, 60, 0.8) 
boxplot(p0.3,p0.5,p0.8, names=c("0.3","0.5","0.8"),col=c("red","yellow","blue"),main = "Boxplot of Probability Distribution ", ylab = "Distribution Density", xlab = "Probability") 

means <- mean(p0.3, na.rm = TRUE) 

text(x=means, labels = means, y=0.01) # you will need to adjust y