#### Answer

The variation for Obama is less.

#### Work Step by Step

Coefficient of variation=$\frac{standard \ deviation}{mean}$
By using the results from before:
$cv_{O}=\frac{standard \ deviation}{mean}=\frac{523.21}{653.87}=0.8001=80.01$%
$cv_{M}=\frac{standard \ deviation}{mean}=\frac{418.42}{458.53}=0.9125=91.25$%
The variation for Obama is less.