Concept:The median is the middle value of a data set after arranging the values in ascending order.
Explanation:Arrange the given numbers from the smallest to the largest.
The original set
35,10,14,38,15,18,22,30,28 becomes the ordered list below.
10,14,15,18,22,28,30,35,38This ordered list contains
9 values, so the number of terms is odd.
For an odd number of terms, the median is the central value in the ordered list.
The central position is the
29+1=5th value.
Counting from the left, the
5th value in the list is
22.
Therefore, the median of the data set is
22.
Answer:D.
22