The distributions of below give a weight of 30 students of a class. Find the median weight of a student.

Weight(in kg)	40-45	45-50	50-55	55-60	60-65	65-70	70-75
Number of students	2	3	8	6	6	3	2

Given: n = 30 and$\frac{n}{2}$= 15

Median class = 55-60

l = 55, C_f = 13, f = 6 & h = 5

Median = 55+($\frac{15-13}{6}$)×5

Median=55 + ($\frac{10}{6}$) = 55+1.666

Median =56.67

Therefore, the median weight of the students = 56.67