Check sibling questions

Example 7 - A survey regarding heights of 51 girls of Class X

Example 7 - Chapter 14 Class 10 Statistics - Part 2
Example 7 - Chapter 14 Class 10 Statistics - Part 3
Example 7 - Chapter 14 Class 10 Statistics - Part 4

This video is only available for Teachoo black users

Introducing your new favourite teacher - Teachoo Black, at only ₹83 per month


Transcript

Example 7 A survey regarding the heights (in cm) of 51 girls of Class X of a school was conducted and the following data was obtained Find the median height. Making Normal Table Median = l + (𝑵/𝟐 −𝒄𝒇)/𝒇 × h Here, 𝑵/𝟐 ∴ 145 – 150 is the Median class And, l = lower limit of median class h = class-interval cf = cumulative frequency of the class before median class f = frequency of the median class Putting values in Formula Median = l + (𝑛/2 −𝑐𝑓)/𝑓 × h = 145 + (𝟐𝟓.𝟓 −𝟏𝟏)/𝟏𝟖 × 5 = 145 + 14.5/11 × 5 = 145 + 4.03 = 149.03 Therefore, Median height is 149.03 cm

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

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.