4. A College offers evening classes in GCSE Mathematics and English.
In order to assess which age groups were reluctant to use the classes, the College collected data on the age in completed years of those currently attending each course. The results are shown in this back-to-back stem and leaf diagram.
| Totals | Mathematics | Age | English | Totals |
| (6) | 999887 | 1 | 99 | (2) |
| (8) | 85311100 | 2 | 013558 | (6) |
| (7) | 7664221 | 3 | 2379 | (4) |
| (4) | 9754 | 4 | 02689 | (5) |
| (3) | 860 | 5 | 0377 | (4) |
| (2) | 52 | 6 | 2448 | (4) |
| (0) | | 7 | 1 | (1) |
Key: 1|3|2 means age 31 doing Mathematics and age 32 doing English
- Find the median and quartiles of the age in completed years of those attending the Mathematics classes.
(4 marks) - On graph paper, draw a box plot representing the data for the Mathematics class.
The median and quartiles of the age in completed years of those attending the English classes are 25,41 and 57 years respectively.
- Draw a box plot representing the data for the English class using the same scale as for the data from the Mathematics class.
(3 marks) - Using your box plots, compare and contrast the ages of those taking each class.