88
The weights of 30 students of a class are given in the following distribution table :
Weight (in kg): 40-45, 45-50, 50-55, 55-60, 60-65, 65-70
Number of students: 2, 5, 8, 6, 6, 3
Find the median weight of the students.
Weight (in kg): 40-45, 45-50, 50-55, 55-60, 60-65, 65-70
Number of students: 2, 5, 8, 6, 6, 3
Find the median weight of the students.
Show SolutionHide Solution↓
Correct Table with $Cf$: 2, 7, 15, 21, 27, 30 (2 marks). Median class: 50-55. Median $= l + \frac{\frac{N}{2} - cf}{f} \times h = 50 + \frac{15 - 7}{8} \times 5 = 55$. Median weight $= 55$ kg. ($2 + 1$ marks)