Answer:
When estimating, I believe the median is 13. It isn't close enough to the 15 to be considered 14.
IQR = 15-10 = 5
Explanation:
To find the IQR, or interquartile range, follow these steps.
1) Arrange the data from least to greatest (as you can see in this box plot)
2) Find the median of the whole data set. This is the number in the middle of the data, or the line in the middle of the box plot.
3) Find the median of the lower half and upper half of the data set. These are called Q1 and Q3, located as the ends of the box plot.
4) Subtract. Q3-Q1=IQR