Option B is a true statement in regards to highways miles per gallon and class of the car.
Step-by-step explanation:
Option B is correct because full-size cars have the smallest standard deviation than compact cars. Compact cars are larger than full size cars. Very few in sub compact cars have larger size.
Full size cars are not distributed uniformly. Each cars are in different sizes. So it is not uniform.
We can make statements about standard deviation from these graphs by calculating it.
