The frequency table shows the daily screen time for 100 students.
| Screen Time (m m\,m minutes) | Frequency |
|---|---|
| 0<m≤600 < m \leq 600<m≤60 | 8 |
| 60<m≤12060 < m \leq 12060<m≤120 | 14 |
| 120<m≤180120 < m \leq 180120<m≤180 | 32 |
| 180<m≤240180 < m \leq 240180<m≤240 | 26 |
| 240<m≤300240 < m \leq 300240<m≤300 | 12 |
| 300<m≤360300 < m \leq 360300<m≤360 | 8 |
Find the percentage of students who used their phones for more than 180 minutes.
Find the class interval that contains the median.
Find an estimate for the mean screen time for the students.
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.