The median of the data is given by the middle value.
We need to find the whole values
then
for 1-7 = 10 values
7-13 = 10 values
13-19= 10 values
19-25= 2 values
25-31 = 2 values
Total of data: 34
We need to find the media for an even number:
The median is given by:
Where n=34
Then
The median is the 17.5 th term.
Now, the median should be in the range 7-13.
Hence, the most likely to be median is 10.