My median answer is 19 for the ages of houses. How do I explain this represents the ages of the houses best? having trouble wiht explaining it.

well, it may not express the price in the best way.

If all of the prices are within a relatively small range, the median is a good estimate, since there are equal numbers of houses above and below that amount.

But if many of the houses cost a lot more or less than the median, one might get a false idea of the true range of prices.