Exercise

Identify outliers

Consider the distribution, shown here, of the life expectancies of the countries in Asia. The box plot identifies one clear outlier: a country with a notably low life expectancy. Do you have a guess as to which country this might be? Test your guess in the console using either min() or filter(), then proceed to building a plot with that country removed.

Instructions

100 XP

gap2007 is still available in your workspace.

Apply a filter so that it only contains observations from Asia, then create a new variable called is_outlier that is TRUE for countries with life expectancy less than 50. Assign the result to gap_asia.
Filter gap_asia to remove all outliers, then create another box plot of the remaining life expectancies.

Take Hint (-30 XP)