Step 1: Understanding the Concept:
Median is a measure of central tendency.
It has certain properties and limitations.
Step 2: Key Formula or Approach:
No specific formula.
Need to understand the characteristics of median.
Step 3: Detailed Explanation:
Median is the middle value in an ordered series.
This is a correct definition.
Median is not widely used because it lacks mathematical properties.
It cannot be used in algebraic operations.
This is also correct.
However, the reason (lack of mathematical properties) is not the explanation for why median is not popular.
It is a characteristic, not the cause.
Thus, both A and R are true, but R is not the correct explanation of A.
Step 4: Final Answer:
Both A and R are true, but R is NOT the correct explanation of A.
Hence, the correct option is (B).