Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
Solve it the standard way once — then learn the shortcut.
Q · Statistics Easy · 45s
Find the median of: 7, 9, 11, 13, 15, 19, 21.
TopicStatistics
Question Typemultiple choice
DifficultyEasy
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Ordered data has 7 values; median is 4th term = 13.
Final Answer: Option B — 13