Ex 14.3, 7
The distribution below gives the weights of 30 students of a class. Find the median weight of the students.
Finding Median
Median = l + (𝑁/2 −𝑐𝑓)/𝑓 × h
Here,
𝑵/𝟐
∴ 55 – 60 is median class
And,
l =
h =
cf =
f =
Putting values in formula
Median = l + (𝑁/2 −𝑐𝑓)/𝑓 × h
= 55 + (15 −13)/6 × 5
= 55 + 2/6 × 5
= 55 + 1.67
= 56.67
Therefore, Median weight is 56.67kg

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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