Construct and percentage a two-way frequency table
A class survey records a student's revision schedule and confidence before a mathematics test
The columns are the categories of Revision schedule; the rows are the categories of Test confidence
| Record | Revision schedule | Test confidence |
|---|---|---|
| 1 | Some planned revision | Low |
| 2 | No planned revision | Moderate |
| 3 | Some planned revision | Low |
| 4 | No planned revision | Low |
| 5 | No planned revision | Low |
| 6 | Some planned revision | Low |
| 7 | Some planned revision | Low |
| 8 | No planned revision | Low |
| 9 | No planned revision | Low |
| 10 | Some planned revision | Low |
| 11 | No planned revision | Low |
| 12 | No planned revision | Low |
| 13 | Some planned revision | Low |
| 14 | Some planned revision | Low |
| 15 | Some planned revision | Low |
| 16 | Some planned revision | Low |
| 17 | Some planned revision | Moderate |
| 18 | No planned revision | Low |
| 19 | No planned revision | Low |
| 20 | No planned revision | Low |
| Test confidence | No planned revision | Some planned revision | Total |
|---|---|---|---|
| Low | 9 | 9 | 18 |
| Moderate | ? | ? | ? |
| Total | 10 | ? | ? |