Worksheet: Cumulative Frequency Graph
In this worksheet, we will practice drawing a cumulative frequency graph, given a table of values, and using it to estimate the median value from the grouped data set.
Q1:
The table shows the marks of 60 students in a mathematics exam. By drawing a cumulative frequency curve, estimate the median mark achieved.
| Mark | 2– | 6– | 10– | 14– | 18– | 22– | 26– | Total |
|---|---|---|---|---|---|---|---|---|
| Frequency | 11 | 10 | 13 | 7 | 6 | 5 | 8 | 60 |
- A34
- B21
- C6.5
- D12.8
- E6.8
Q2:
The table shows the marks of 60 students in a mathematics exam. By drawing a cumulative frequency curve, estimate the median mark achieved.
| Mark | 2– | 6– | 10– | 14– | 18– | 22– | 26– | Total |
|---|---|---|---|---|---|---|---|---|
| Frequency | 10 | 7 | 5 | 9 | 11 | 12 | 6 | 60 |
- A31
- B22
- C10
- D17.6
- E9.5
Q3:
The table shows the marks of 60 students in a mathematics exam. By drawing a cumulative frequency curve, estimate the median mark achieved.
| Mark | 2– | 6– | 10– | 14– | 18– | 22– | 26– | Total |
|---|---|---|---|---|---|---|---|---|
| Frequency | 11 | 7 | 4 | 8 | 12 | 4 | 14 | 60 |
- A30
- B22
- C10
- D18
- E9
Q4:
The table shows the marks of 60 students in a mathematics exam. By drawing a cumulative frequency curve, estimate the median mark achieved.
| Mark | 2– | 6– | 10– | 14– | 18– | 22– | 26– | Total |
|---|---|---|---|---|---|---|---|---|
| Frequency | 12 | 10 | 9 | 10 | 6 | 11 | 2 | 60 |
- A31
- B22
- C8
- D13.6
- E9