According to CREA: "The national average home price was down in March from where it stood last year. But home prices are not declining. Confused?
Average prices are affected by changes in the mix of sales, so year-over-year price comparisons can be like looking in a funhouse mirror: distorted.
To illustrate: line up a class of kids by height, calculate the average. Now excuse the ten tallest kids and recalculate the average. The average height has declined, but the kids haven't gotten any shorter."