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Railways PYQCBT 2 2017

RRB NTPC · Question 120

Which one of the following is NOT a correct description of median?

  1. It is not affected by extreme values.

  2. For odd number of values (n), median is (n+1)/2.

  3. It is based on all observations of data.

  4. It can be determined graphically.

Show answer & explanation

Answer: (C) It is based on all observations of data.

Explanation

The median depends only on the middle value(s) of the ordered data, not on every observation (that is a feature of the mean). So 'it is based on all observations' does not describe the median.