2. The number of caravans on Seaview caravan site on each night in August last year is summarised in the following stem and leaf diagram.
| Caravans | | 1 | 10 means 10 | Totals |
| 1 | 0 | | | | (2) |
| 2 | 1 | 8 | | | (4) |
| 3 | 0 | 3 | 4 | 7 | (8) |
| 4 | 1 | 5 | 8 | 8 | (9) |
| 5 | 2 | 6 | 7 | | (5) |
| 6 | 2 | | | | (3) |
- Find the three quartiles of these data.
During the same month, the least number of caravans on Northcliffe caravan site was 31. The maximum number of caravans on this site on any night that month was 72 . The three quartiles for this site were 38,45 and 52 respectively.
- On graph paper and using the same scale, draw box plots to represent the data for both caravan sites. You may assume that there are no outliers.
- Compare and contrast these two box plots.
- Give an interpretation to the upper quartiles of these two distributions.