The frequency table shows information about the masses of 20 parcels delivered to an office.
| Mass (m m\,m kg) | Frequency |
|---|---|
| 0 to 4 | 4 |
| 5 to 9 | 7 |
| 10 to 14 | 5 |
| 15 to 19 | 3 |
| 20 to 24 | 1 |
Calculate an estimate for the mean mass of the parcels.
Practise AQA GCSE Maths Averages from Frequency Tables with exam-style questions for Foundation and Higher tier. 32 questions, matched to the AQA GCSE Maths (8300) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.