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Ex 15.1, 8 - Find mean deviation about median - CBSE - Mean deviation about median - Discrete Frequency


  1. Chapter 15 Class 11 Statistics
  2. Serial order wise
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Ex15.1, 8 Find the mean deviation about the median for the data The given observations are already in ascending order. Adding a column corresponding to cumulative frequencies of the given data, we obtain the following table. c.f = cumulative frequency โˆ‘128โ–’๐‘“๐‘– = 29 โˆ‘128โ–’๐‘“๐‘– |๐‘ฅ๐‘– โˆ’M| = 148 โˆด Mean Deviation = (ฮฃ ๐‘“_๐‘– |๐‘ฅ_(๐‘– )โˆ’ M|)/๐‘“_๐‘– = 148/29 = 5.1

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