Find the mean of the children who watch TV programmes for the number of hours in the past week using the assumed mean method.
| Hours | \(0 - 5\) | \(5 - 10\) | \(10 - 15\) | \(15 - 20\) | \(20 - 25\) |
| Number of children | 5 | 11 | 13 | 6 | 10 |
The mean for the given data is
(Note: If the answer is a whole number, write as it is. If not, round off the answer to \(2\) decimal places and provide the answer.)