Question

Find the median of this data set.
13, 5, 9, 23, 11, 47, 29, 31, 7

• A. 11
• B. 12
• C. 13
• D. 23

Answer 1

The correct option is C 13

Arranging the data set in ascending order:
5, 7, 9, 11, 13, 23, 29, 31, 47
Here, n = 9 (odd)

$Median={\frac{(n+1)}{2}}^{th}$ observation

$=\frac{(9+1)}{2}$

$=5^{th}observation$
$=13$

Therefore, the median is 13.