Question

Find the median of first 10 prime numbers.

• A. 12
• B. 24
• C. 13
• D. 11

Answer 1

The correct option is A

12

The first ten prime numbers are

2 ,3 ,5, 7 , 11,13,17 , 19 , 23 ,29

Since there are 10 observations, the median of the data is the $\frac{1}{2}$ $\times$ [ $\frac{n}{2}$ th observation + ($\frac{n}{2}$ + 1) th observation]

$\frac{n}{2}$ th observation = $\frac{10}{2}$ th observation = 5th observation = 11

$\frac{n}{2}$ + 1 th observation. = $\frac{n}{2}$ + 1 th observation.th observation = 6th observation = 13

Median = $\frac{11+13}{2}$

= 12