The following twelve sample data values, with a mean value of 337, are provided: 
The sample variance is _____
Definitions:
Waving the Bloody Shirt
A phrase used to describe the use of the memory or image of war and its casualties by politicians to criticize opponents or rally support, originally associated with post-Civil War U.S. politics.
Civil War Animosities
Hostility and resentment that lingered between the Northern and Southern United States after the Civil War, affecting the country's social and political landscape.
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