The cumulative frequency table shows the time, in minutes, taken by several runners to complete a 5km race.
| Time (t t\,t mins) | Cumulative Frequency |
|---|---|
| 20<t≤2520 < t \leq 2520<t≤25 | 5 |
| 20<t≤3020 < t \leq 3020<t≤30 | 18 |
| 20<t≤3520 < t \leq 3520<t≤35 | 40 |
| 20<t≤4020 < t \leq 4020<t≤40 | 62 |
| 20<t≤4520 < t \leq 4520<t≤45 | 72 |
| 20<t≤5020 < t \leq 5020<t≤50 | 75 |
a.[2]
On the grid, plot a cumulative frequency graph for this information.
b.[2]
Find the median time.
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.