Ages (in years) of 6 children of two groups are recorded as below:
| Group A | Group B |
|---|---|
| 7 | 7 |
| 7 | 9 |
| 9 | 11 |
| 8 | 12 |
| 10 | 12 |
| 10 | 12 |
(a) Find the mode and range for each group.
(b) Find the range and mode if the two groups are combined together.
(a) Group A: Mode = 7 and 10, Range = 3.
Group B: Mode = 12, Range = 5.
(b) Combined: Range = 5, Mode = 7 and 12.
Group A: Max=10, Min=7 → Range=3, Modes are 7 and 10.
Group B: Max=12, Min=7 → Range=5, Mode=12.
Combined: Max=12, Min=7 → Range=5, Modes=7 and 12.