Question

Find the median of the following data
$25,21,18,27,29,16,22,15$

• A. $21.5$
• B. $27.5$
• C. $21$
• D. $16$

Answer 1

The correct option is A $21.5$

Arranging the data in ascending order of magnitude
$15,16,18,21,22,25,27,29$
Since there are $8$, i.e. an even number of observation
therefore, median = arithmetic mean of ${\left(\frac{8}{2}\right)}^{th}$ and ${\left(\frac{8}{2}+1\right)}^{th}$ observation
Median = $\frac{21+22}{2}=21.5$