The marks obtained by 11 students in a test are 47, 62, 38, 71, 55, 29, 66, 50, 43, 58, 34. Find the median.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 50
For an odd number of values, the median is the middle value after arranging them in order. With 11 values, it is the 6th value.
In ascending order: 29, 34, 38, 43, 47, 50, 55, 58, 62, 66, 71
The 6th value is 50
The median is 50.
Why the other options are incorrect
Option (2) 55 — Incorrect. This is the 7th value in order, one place after the middle.
Option (3) 47 — Incorrect. This is the 5th value in order, one place before the middle.
Option (4) 29 — Incorrect. This is the middle value of the list as written; the values must first be put in order.