R: data
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data()
# Loading data(mtcars) # Print the first 6 rows head(mtcars, 6)
# 1. Loading data("mtcars") # 2. Print head(mtcars) summary(mtcars)
# Number of rows (observations) nrow(mtcars) # Number of columns (variables) ncol(mtcars)
data("iris") head(iris)
data("ToothGrowth") head(ToothGrowth)
data("PlantGrowth") head(PlantGrowth)
data("USArrests") head(USArrests)
Basic R Functions
data(mtcars) summary(mtcars) quantile(mtcars$cyl,seq(0,1,.1)) # here seq gives fivenum(mtcars$cyl) sd(mtcars$cyl) var(mtcars$cyl) range(mtcars$cyl)
mad(mtcars$cyl) IQR(mtcars$cyl)
# skewcoeff(mtcars$cyl) # skewcoeff(mtcars$cyl)