Restore the original color scheme. The graph on the left shows the distribution of data on the x-axis (% of African-Americans per state) from low to high. The y-axis shows the states ranked from 0-50. As you move your mouse over the dots in the graph, the state name and percentage of African-Americans appear. Try this. Starting at the upper left, you can see that the lowest 13 states are between 0 and 2.2%. The next 13 states are between 2.2 and 6.8 percent. This pattern continues. Cartographers use graphic arrays to help in setting class break points that divide the data into "natural classes" or groupings. Look for vertical groupings that indicate a group of states with similar percentages of African-Americans, and set the class limits in the empty horizontal gaps by dragging the lines. Which of the following should NOT be a breakpoint using the above rules? 2.7 6.1 9.7 20.1