6 The lengths of some insects of the same type from two countries, \(X\) and \(Y\), were measured. The stem-and-leaf diagram shows the results.
| Country \(X\) | Country \(Y\) |
| (10) | 9766644432 | 80 | | |
| (18) | 888776655544333220 | 81 | 1122333556789 | (13) |
| (16) | 9998877655322100 | 82 | 001233394566788 | (15) |
| (16) | 8765553322211100 | 83 | 01224444556677789 | (17) |
| (11) | 87655443311 | 84 | 001244556677789 | (15) |
| | 85 | \(12 r 335566788\) | (12) |
| | 86 | 01223555899 | (11) |
Key: 5 | 81 | 3 means an insect from country \(X\) has length 0.815 cm and an insect from country \(Y\) has length 0.813 cm .
- Find the median and interquartile range of the lengths of the insects from country \(X\).
- The interquartile range of the lengths of the insects from country \(Y\) is 0.028 cm . Find the values of \(q\) and \(r\).
- Represent the data by means of a pair of box-and-whisker plots in a single diagram on graph paper.
- Compare the lengths of the insects from the two countries.