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

  1. Chapter 14 Class 10 Statistics (Term 2)
  2. Serial order wise

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 + (๐‘/2 โˆ’๐‘๐‘“)/๐‘“ ร— h Here, ๐‘ต/๐Ÿ โˆด 3000 โ€“ 3500 is median class And, l = h = cf = f = 3000 2000 โ€“ 1500 = 500 Putting values in formula Median = l + (๐‘/2 โˆ’๐‘๐‘“)/๐‘“ ร— h = 3000 + (๐Ÿ๐ŸŽ๐ŸŽ โˆ’๐Ÿ๐Ÿ‘๐ŸŽ)/๐Ÿ–๐Ÿ” ร— 500 = 3000 + 70/86 ร— 500 = 3000 + 406.98 = 3406.98 So, median life of lamp is 3406.98 hours

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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.