Exercise

IQR outliers

In the boxplot you created you can see a circle above the boxplot. This indicates an outlier. We can calculate an outlier as a value 1.5 * IQR above the third quartile, or 1.5 * IQR below the first quartile. Let's try it out with the qsec variable from mtcars.

Instructions

100 XP

In your console, find the value of the interquartile range of the qsec variable of mtcars using IQR().
In your console, find the values of the first and third quartiles of the qsec variable of mtcars using quantile()
In your console, calculate the upper threshold value for an outlier. Report this value in your script.
In your console, calculate the lower threshold value for an outlier. Report this value in your script.

Take Hint (-30 XP)