The frequency table shows the time taken for 100 people to travel to an event.
| Time (minutes) | Frequency |
|---|---|
| 0<t≤100 < t \leq 100<t≤10 | 14 |
| 10<t≤2010 < t \leq 2010<t≤20 | 16 |
| 20<t≤3020 < t \leq 3020<t≤30 | 23 |
| 30<t≤4030 < t \leq 4030<t≤40 | 29 |
| 40<t≤5040 < t \leq 5040<t≤50 | 12 |
| 50<t≤6050 < t \leq 6050<t≤60 | 6 |
Verify that 47% of people travelled for more than 30 minutes to the event
Verify that the class interval 20<t≤30 20 < t \leq 30\,20<t≤30 contains the median
Verify that an estimate for the mean time taken for people to travel to the event is 27.7
111 exam-style questions on OCR GCSE Maths Averages from Frequency Tables. Each one has a worked solution and a mark scheme showing where the marks go.