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)


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