I can’t see your picture what do it say?
The IQR tells you how spread out the "middle" values are. It can also be used to figure out if there are any outliers.
Frist 5 in / 1 over 2 = 2.5
So yes she can do that
Nina's rate is 12.7 mph and Sophia's rate is 10 mph. Therefore, Nina is faster.