The mean is the most common measure of center. it is what most people think of when they hear the word "average". however, the mean is affected by extreme values so it may not be the best measure of center

The electoral college consists of 538 electors. a majority of 270 electoral votes is required to elect  the president. your state's entitled allotment of electors equals the number of members in its congressional delegation: one for each member in the house of representatives plus two for yoursenators.congress does the electoral college represent