Check sibling questions

Ex 14.3, 5 - Distribution of life time of 400 neon lamps

Ex 14.3, 5 - Chapter 14 Class 10 Statistics - Part 2
Ex 14.3, 5 - Chapter 14 Class 10 Statistics - Part 3

This video is only available for Teachoo black users

Solve all your doubts with Teachoo Black (new monthly pack available now!)


Transcript

Ex 14.3, 5 Find the following table gives the distribution of the life time of 400 neon lamps: Find the median life time of a lamp. Finding Median Median = l + (𝑁/2 −𝑐𝑓)/𝑓 × h Here, 𝑵/𝟐 ∴ 3000 – 3500 is median class And, l = h = cf = f = 3000 2000 – 1500 = 500 Putting values in formula Median = l + (𝑁/2 −𝑐𝑓)/𝑓 × h = 3000 + (𝟐𝟎𝟎 −𝟏𝟑𝟎)/𝟖𝟔 × 500 = 3000 + 70/86 × 500 = 3000 + 406.98 = 3406.98 So, median life of lamp is 3406.98 hours

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.