A student noted the number of cars passing through a spot on a road for \(100\) periods each of \(3\) minutes and summarised it in the table given below. Find the mode of the data :
| Number of cars | \(0-10\) | \(10-20\) | \(20-30\) | \(30-40\) | \(40-50\) | \(50-60\) | \(60-70\) | \(70-80\) |
| Frequency | 6 | 13 | 13 | 12 | 17 | 9 | 15 | 5 |
Answer:
Mode \(=\) ____________