Answer:
-$17,600
Explanation:
Comparative statistics measure two different economic outputs based on how an exogenous (external) factor affects them. In this case it measures the price of a house far away from the mine and a house close to the mine.
The house far away costs $220,000, while the nearby house costs $202,400 (8% less). So the effect of the mine on the house prices is -$17,600