On the grid draw a cumulative frequency diagram for the data.

1. Use the cumulative frequency table from the previous part. 2. For a cumulative frequency graph, you plot the cumulative frequency against the **upper class boundary** of each group. 3. The points to plot are (upper boundary, cumulative frequency). 4. The first point is (5, 8). 5. The second point is (10, 31). 6. The third point is (15, 71). 7. The fourth point is (20, 90). 8. The fifth point is (25, 100). 9. The graph should start from the lowest boundary with a frequency of 0, so start your line at (0, 0). 10. Plot all the points and connect them with a smooth curve or straight lines.