Question:
The distribution below gives the weights of 30 students of a class. Find the median weight of the students.
Solution:
$\frac{\mathbf{N}}{\mathbf{2}}=\frac{\mathbf{3 0}}{\mathbf{2}}=15$
Median class $=55-60$
Median $=\ell+\left\{\frac{\frac{\mathbf{N}}{\mathbf{2}}-\mathbf{c}}{\mathbf{f}}\right\} \times \mathbf{h}$
$=55+\left\{\frac{\mathbf{1 5}-\mathbf{1 3}}{\mathbf{6}}\right\} \times 5$
= 56.67