Patrick from Woodbridge school sent in the following solution:



"I made frequency graphs of the data sets and I tried to find similar features.



1. A G K M have no odd numbers so they are very likely to be one set.

2. D E L N have no early numbers or late numbers (they are all grouped around the middle)

3. C F H P have the same general shape - a rise up to 17 ish, then a very steep drop.

4. B I J O each have almost all the numbers centred in two peaks at around 7 and 13.



E could possibly be in group 4. C and H are not quite as well defined as the others. I would say that the best example of my definitions in each group is:



1. (none needed)

2. D

3. F

4. B