“The average is calculated by adding up all of the individual values and dividing this total by the number of observations. The median is calculated by taking the “middle” value, the value for which half of the observations are larger and half are smaller.”
So for example, in a country with 99% poor people, and 1% insanely rich people, the median person’s wealth is actually really small (like the poor people), but the average person’s wealth is kinda big (except a person with that mid-ground wealth doesn’t actually exist in the country).
In the case of voters, this means that in a country of highly polarized views and power, so of imbalanced sides, the median and average voter can be very different. One is what the people want, the other is what the power wants.
Emphasis mine.
Depends on the country.