The distance of students from their school to their home is given below. Find the median of the data.
 
Distance (in km)\(0 - 3\)\(3 - 6\)\(6 - 9\)\(9 - 12\)\(12 - 15\)
Number of students710241
 
The median of the data is
Answer variants:
3.5
2.5
4.5
5.5