World population and countries are
A data frame with 159 observations on the following 3 variables.
Country
a character vector with countries names
Population
a numeric vector with population
Area
a numeric vector with area of the counties
Examples
data(population_data)
str(population_data)
#> 'data.frame': 159 obs. of 3 variables:
#> $ Country : chr "China" "India" "United States" "Indonesia" ...
#> $ Population: num 1.44e+09 1.38e+09 3.31e+08 2.74e+08 2.21e+08 ...
#> $ Area : num 9388211 2973190 9147420 1811570 771 ...