Concept:The median is the middle value that separates a data set into two equal halves.
Explanation:First, arrange the given data in either ascending or descending order.
Then, locate the item that divides the ordered set into two equal parts.
For an odd number of observations, the median is exactly the middle item.
For an even number of observations, the median is the average of the two middle items.
So the correct method involves ordering the data and finding the central dividing item.
This matches option A exactly.
Option C describes the mean, not the median.
Options B and D do not give the median.
Answer:A. arrange the data in either ascending or descending order and find what item divides the set in two equal parts