Data Frames, Ranks and Orders

This exercise is somewhat more challenging. We are going to repeat the previous exercise but this time order my_df so that the states are ordered from least populous to most.

This exercise is part of the course

Data Science R Basics

View Course

Exercise instructions

Create variables states and ranks to store the state names and ranks by population size respectively.
Create an object ind that stores the indexes needed to order the population values, using the order command. For example we could define o <- order(murders$population)
Create a data frame with both variables following the correct order. Use the bracket operator [ to re-order each column in the data frame. For example, states[o] orders the abbreviations based by population size.
The columns of the data frame must be in the specific order and have the specific names: states, ranks.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Define a variable states to be the state names from the murders data frame


# Define a variable ranks to determine the population size ranks 


# Define a variable ind to store the indexes needed to order the population values


# Create a data frame my_df with the state name and its rank and ordered from least populous to most

Edit and Run Code