The frequency table shows the speeds of 100 cars.
| Speed (km/h) | Frequency |
|---|---|
| 0<s≤200 < s \leq 200<s≤20 | 6 |
| 20<s≤4020 < s \leq 4020<s≤40 | 17 |
| 40<s≤6040 < s \leq 6040<s≤60 | 29 |
| 60<s≤8060 < s \leq 8060<s≤80 | 25 |
| 80<s≤10080 < s \leq 10080<s≤100 | 20 |
| 100<s≤120100 < s \leq 120100<s≤120 | 3 |
a.[2]
On the grid, plot a cumulative frequency graph for this information.
b.[2]
Find an estimate for the number of cars travelling over 90 km/h.
Cumulative Frequency Questions
Practise OCR GCSE Maths Cumulative Frequency with exam-style questions for Foundation and Higher tier. 24 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.