This is a case where average might be more useful the median. If the richest real estate owners (top 1% own 13% of all US real estate) have a longer average ow

This is a case where average might be more useful the median. If the richest real estate owners (top 1% own 13% of all US real estate) have a longer average ownership period, then that will have a disproportionate effect on the local market, because they own so much of it.