REINZ 采用的中位价比较可信！Median or Average? – Why the median is right for house price trends
There are technical reasons why the median provides a more accurate picture of what is happening to the prices of houses rather than the “average.”
As an example, assume there are 11 houses sold in a month with a price range of $200,000 to $300,000 and an average price of $250,000. Now replace one of those houses with a house that sold for $1 million. The average is now $318,182, even though 10 of the 11 houses for the month sold for less than this value. The median would be the price of the middle house sold in the range (in this case the sixth house), which more accurately reflects what the majority of the houses sold for.
REINZ uses medians to provide a more accurate measure of the “mid-point” of house prices that reflects what most people are going to be buying and selling houses for.