9709 P62 - Mar 2018 - Q1
2461
There are 900 students in a certain year-group. An identical puzzle is given to each student and the time taken, \(t\) minutes, to complete the puzzle is recorded. These times are summarised in the following frequency table.
| Time taken, \(t\) minutes | \(t \leq 3\) | \(3 < t \leq 4\) | \(4 < t \leq 5\) | \(5 < t \leq 6\) | \(6 < t \leq 8\) | \(8 < t \leq 10\) | \(10 < t \leq 14\) |
|---|---|---|---|---|---|---|---|
| Frequency | 120 | 180 | 200 | 160 | 110 | 80 | 50 |
On the grid, draw a cumulative frequency graph to represent the data. Use your graph to estimate the median time taken by these students to complete the puzzle.
