The line plot displays the cost of used books in dollars. Cost of Used Books 3 6 8 Cost in Dollars Which measure of center is most appropriate to represent the data in the graph, and why? The median is the best measure of center because there are no outliers present. The mean is the best measure of center because there are no outliers present. The median is the best measure of center because there are outliers present. O The mean is the best measure of center because there are outliers present.