Answer:
see below
Explanation:
The median is the middle point and it is found by the middle line of the box
median = 2.1
lowest data point is found by the left most dot
lowest point = 1.9
highest data point is the right most dot
highest point = 2.4
lower quartile median is the middle of the lower half = left line of the box
lower quartile = 2.0
upper quartile median is the middle of the upper half = right line of the box
upper quartile = 2.3
The interquartile range is the difference between the upper quartile and the lower quartile
2.3 - 2.0 = .3