The middle sale when sales for a given period of time are arranged in order of their increasing value is the median sale.
The median selling price is half the list price high and half the list price low. For example, if there are 15 house prices, the median will be the price 7 prices above and 7 prices below.
The median sale is the middle price in the data set, with exactly half the houses costing less and the other half costing more.
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