Ex 14.4, 2 - During medical check-up of 35 students of a class

Ex 14.4, 2 - Chapter 14 Class 10 Statistics - Part 2
Ex 14.4, 2 - Chapter 14 Class 10 Statistics - Part 3 Ex 14.4, 2 - Chapter 14 Class 10 Statistics - Part 4 Ex 14.4, 2 - Chapter 14 Class 10 Statistics - Part 5 Ex 14.4, 2 - Chapter 14 Class 10 Statistics - Part 6

  1. Chapter 14 Class 10 Statistics
  2. Serial order wise

Transcript

Ex 14.4, 2 During the medical check-up of 35 students of a class, their weights were recorded as follows: Draw a less than type ogive for the given data. Hence obtain the median weight from the graph verify the result by using the formula. Finding Median Since โˆ‘โ–’๐‘“๐‘– = 35 So, N = 35 โˆด ๐‘/2 = 35/2 = 17.5 We draw a line parallel to x-axis where Number of students = 17.5 Where the line intersects are equation, it is the median โˆด Median = 46.5 To find Median by Formula, We convert Less than table to Normal forFinding Median Median = l + (๐‘ต/๐Ÿ โˆ’๐’„๐’‡)/๐’‡ ร— h Here, ๐‘ต/๐Ÿ โˆด 46 โ€“ 48 is median class And, l = h = cf = f = Putting values in formula Median = l + (๐‘/2 โˆ’๐‘๐‘“)/๐‘“ ร— h = 46 + (17.5 โˆ’14)/14 ร— 2 = 46 + 3.5/14 ร— 7 = 46 + 0.5 = 46.5 Thus, Median from the formula matches Median from the graph

About the Author

Davneet Singh's photo - Teacher, Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.