Which states have the highest standard deviation in price?
Below is a chart showing the standard deviation in the Republican and Democrat contract prices for each state since May 24, 2008. Standard deviation is a measure of how dispersed a data set is. If many points are far from the average, standard deviation is high. If many points are close to the average, standard deviation is low.
One way to interpret this chart is that for the states at the top Intraders are having a harder time figuring out what the correct price is for an Obama/McCain victory. Near the bottom of the chart, Intraders feel that the established price is very accurate and it has thus not fluctuated much.