4.1 Learning Objectives

After completing this lab, you will be able to

• Compute the interquartile range in R Commander and SPSS
• Produce boxplots in R Commander and SPSS

This lab will require you to load data into R Commander and SPSS. You can review this skill in the videos on R Commander basics (beginning at 3:32) and SPSS basics (beginning at 0:48).

You can download the dataset we will be using in this lab here. In R Commander, you can load the SLID dataset directly from the carData package. For further information about the dataset and variables, refer to the documentation.