Foundation November 2024 Paper 3 Q17
17 The table shows information about the times, in minutes, 100 people took to complete a bike race.
| Time (\(t\) minutes) | Frequency |
|---|---|
| \(120 \leqslant t \lt 140\) | 12 |
| \(140 \leqslant t \lt 160\) | 28 |
| \(160 \leqslant t \lt 180\) | 30 |
| \(180 \leqslant t \lt 200\) | 22 |
| \(200 \leqslant t \lt 220\) | 8 |
On the grid below, draw a frequency polygon for this information. (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| Points plotted at (130, 12) (150, 28) (170, 30) (190, 22) (210, 8) and joined with line segments | B2 | for correct plotting of 5 points and joining with line segments |
| (B1 | for points plotted correctly at midpoints or for a frequency polygon with one point incorrect or for a frequency polygon with first and last point joined directly or for joining the points with line segments at the correct heights consistent within intervals (including end points)) |
Additional guidance
Ignore any histogram drawn
Ignore any part of the frequency polygon outside of the range of the first and last point plotted.
for example, at 120, 140, 160, 180, 200
or
at 140, 160, 180, 200, 220