Intermediate November 2021 Unit 2 Q4
4. Thirty numbers are recorded in the grouped frequency table below.
| Group | 1 to 20 | 21 to 40 | 41 to 60 | 61 to 80 | 81 to 100 |
|---|---|---|---|---|---|
| Frequency | 3 | 8 | 7 | 6 | 6 |
It is decided that the same thirty numbers should be recorded in a table with larger group widths.
This new table is shown below, but only one frequency has been given.
| Group | 1 to 30 | 31 to 60 | 61 to 90 |
|---|---|---|---|
| Frequency | 12 |
(a) What is the smallest possible frequency of the 1 to 30 group? [1]
(b) What is the greatest possible frequency of the 31 to 60 group? [1]
| Scheme | Marks | Comments |
|---|---|---|
| 3 | B1 | If no answer seen, check table. |
| Scheme | Marks | Comments |
|---|---|---|
| 15 | B1 | If no answer seen, check table. |