The following chart summarizes the selling price of homes sold last month in the Sarasota, Florida, area. The vertical axis to the left plots frequency ranging from 0 to 250 in increments of 50. The horizontal axis plots selling price in $1, 000, ranging from 0 to 350 in increments of 50. The values are as follow: (50, 0), (100, 10), (150, 70), (200, 125), (250, 210), (300, 240), (350, 250). The vertical axis to the right plots percentage versus the hourly wage, ranging from 0 to 100% in increments of 25. The values are as follow: (50, 0), (100, 4), (150, 28), (200, 50), (250, 84), (300, 96), (350, 100). All values approximated. a. What is the chart called