The line plot displays the cost of used books in dollars. A horizontal line starting at 3 with tick marks every one unit up to 8. The line is labeled Cost in Dollars, and the graph is titled Cost of Used Books. There are two dots above 4, 5, and 7. There are four dots above 6. 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 the data is symmetrical. The mean is the best measure of center because the data is symmetrical. The median is the best measure of center because the data is skewed. The mean is the best measure of center because the data is skewed