Last updated at May 12, 2021 by Teachoo

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 โโ๐๐ = 35 So, N = 35 โด 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 โด Median = 46.5 To find Median by Formula, We convert Less than table to Normal forFinding Median Median = l + (๐ต/๐ โ๐๐)/๐ ร h Here, ๐ต/๐ โด 46 โ 48 is median class And, l = h = cf = f = Putting values in formula Median = l + (๐/2 โ๐๐)/๐ ร h = 46 + (17.5 โ14)/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

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.