#### Answer

White drivers' variation is bigger.

#### Work Step by Step

Coefficient of variation=$\frac{standard \ deviation}{mean}$
By using the results from before:
$cv_{W}=\frac{standard \ deviation}{mean}=\frac{2.9059}{73}=0.0398=3.98$%
$cv_{AA}=\frac{standard \ deviation}{mean}=\frac{2.7487}{74}=0.0371=3.71$%
White drivers' variation is bigger.