The box plots represent the distributions of typing speeds of students before and after a computer-programming course.



Which statement is true about the variability of the distributions?

The interquartile range of the typing speeds after the course is greater than the interquartile range of the speeds before the course.
The interquartile ranges of the two distributions are the same.
The range of the speeds after the course is smaller than the range of the speeds before the course.
The ranges of the two distributions are the same.