Question

A data has 25 observations arranged in a descending order. Which observation represents the median?
[CBSE 2014]

Answer 1

If the number of observations is odd, then the median is $\left(\frac{n+1}{2}\right)\mathrm{th}$ observation.

Thus, $\left(\frac{25+1}{2}\right)=13$th observation represents the median.