The frequency table shows the weight, in kg, of some cats.
| Weight (kg) | Frequency |
|---|---|
| 0<w≤10 < w \leq 10<w≤1 | 8 |
| 1<w≤21 < w \leq 21<w≤2 | 10 |
| 2<w≤32 < w \leq 32<w≤3 | 21 |
| 3<w≤43 < w \leq 43<w≤4 | 19 |
| 4<w≤54 < w \leq 54<w≤5 | 13 |
| 5<w≤65 < w \leq 65<w≤6 | 9 |
Complete the cumulative frequency table
| Weight (kg) | Cumulative Frequency |
|---|---|
| 0<w≤10 < w \leq 10<w≤1 | |
| 0<w≤20 < w \leq 20<w≤2 | |
| 0<w≤30 < w \leq 30<w≤3 | |
| 0<w≤40 < w \leq 40<w≤4 | |
| 0<w≤50 < w \leq 50<w≤5 | |
| 0<w≤60 < w \leq 60<w≤6 |
On the grid opposite draw a cumulative frequency graph for this information.
Use your cumulative frequency graph to find an estimate for the interquartile range.
Practise CIE IGCSE Maths Cumulative Frequency with exam-style questions for Core and Extended tier. 4 questions, matched to the CIE IGCSE Maths (0580) specification and written in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) 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.
