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boxplot(iris$Sepal.Length,horizontal = TRUE)

hist(iris$Sepal.Length)

library(moments)
summary(iris$Sepal.Length)
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##   4.300   5.100   5.800   5.843   6.400   7.900
var(iris$Sepal.Length)
## [1] 0.6856935
sd(iris$Sepal.Length)
## [1] 0.8280661
skewness(iris$Sepal.Length)
## [1] 0.3117531
kurtosis(iris$Sepal.Length)
## [1] 2.426432
boxplot(iris$Sepal.Length~iris$Species)