Check the formula sheet of Statistics

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  1. Chapter 15 Class 11 Statistics
  2. Serial order wise
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"Chapter 15 Class 11" "Statistics Sheet " "by" teachoo.com Ungrouped Data 2, 2, 5, 3, 4, 8, 9, 7, 6, 6, 3, 1 Mean 1/N โˆ‘24_(i = 1)^nโ–’x_i Median N is even Median = ((๐‘)^๐‘กโ„Ž ๐‘ก๐‘’๐‘Ÿ๐‘š + (๐‘/2 +1)^๐‘กโ„Ž ๐‘ก๐‘’๐‘Ÿ๐‘š)/2 N is odd Median =((๐‘ + 1)/2)^๐‘กโ„Ž ๐‘ก๐‘’๐‘Ÿ๐‘š M.D (๐’™ย ฬ…) 1/N โˆ‘_(i = 1)^nโ–’ใ€–|x_iโˆ’๐’™ย ฬ…|ใ€— ๐’™ย ฬ… = Mean M.D (๐Œ) 1/๐‘ โˆ‘_(๐‘– = 1)^๐‘›โ–’ใ€–|๐‘ฅ_๐‘–โˆ’M|ใ€— ๐Œ = Median S.D (๐ˆ) โˆš(1/๐‘ โˆ‘_(๐‘– = 1)^๐‘›โ–’(๐‘ฅ_๐‘–โˆ’๐‘ฅย ฬ… )^2 ) ๐‘ฅย ฬ… = Mean Shortcut formula of S.D for grouped data : ๐ˆ=h/N โˆš(๐‘ โˆ‘_(๐‘– = 1)^๐‘›โ–’ใ€–๐‘“_๐‘–โˆ’๐‘ฆ_๐‘–^( 2) ใ€—โˆ’(โˆ‘_(๐‘– = 1)^๐‘›โ–’ใ€–๐‘“_๐‘–โˆ’๐‘ฆ_๐‘–^( 2) ใ€—) ) ๐‘ฆ_๐‘– = (๐‘ฅ_๐‘– โˆ’ ๐ด)/โ„Ž, A = Assumed mean

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.