The data given is:
2, 4, 5, 2, 4, 8, 2, 4, 7, 8, 12, 4
The mode is the number that appears most frequently in the data.
Count the frequency of each number:
| Number | Frequency |
|---|---|
| 2 | 3 times |
| 4 | 4 times |
| 5 | 1 time |
| 7 | 1 time |
| 8 | 2 times |
| 12 | 1 time |
The number 4 appears 4 times, which is more than any other number.
Therefore, the mode is 4.