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  1. Chapter 15 Class 11 Statistics
  2. Serial order wise
  3. Ex 15.1

Ex 15.1, 5

Last updated at Dec. 12, 2016 by

Ex 15.1, 5 - Find mean deviation about mean xi 5, 10, fi 7, 4 - Mean deviation about mean - Discrete Frequency

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  1. Chapter 15 Class 11 Statistics
  2. Serial order wise
    3. Ex 15.1
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Transcript

Ex 15.1, 5 Find the mean deviation about the mean for the data. First we will calculate mean Mean deviation about mean = ( โˆ‘128โ–’๐‘“๐‘–|๐‘ฅ๐‘– โˆ’ ๐‘ฅย ฬ… | )/(โˆ‘128โ–’๐‘“๐‘–) Putting โˆ‘128โ–’๐‘“๐‘–|๐‘ฅ๐‘– โˆ’ ๐‘ฅย ฬ… | = 158 , โˆ‘128โ–’๐‘“๐‘– = 25 M.D. (๐‘ฅย ฬ…) = 1/25 ร— 158 = 6.32

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