The data set given is:
6, 7, 11, 14, 20, 30, 35
The median of a data set is the middle value when the numbers are arranged in ascending order.
In ascending order, the numbers are:
6, 7, 11, 14, 20, 30, 35
There are 7 numbers and the middle number is "4th number", which is 14.
The correct answer is 14.
Answer
A