Question

Height of seven students is measured in cm as,
140, 142, 144, 145, 147, 149, 151
Find the median height.

Answer 1

S.No	Height (cms)
1 2 3 4 5 6 7	140 142 144 145 147 149 151
N = 7

Median = Size of ${\left(\frac{N+1}{2}\right)}^{\mathrm{th}}$ item
or, M= Size of ${\left(\frac{7+1}{2}\right)}^{\mathrm{th}}$ item
or, M= size of 4^th item
$\Rightarrow$ M= 145

Hence, the median height is 145 cm.