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Ex 13.2, 6 Find the mean and standard deviation using short-cut method. Mean = a + (โˆ‘โ–’๐‘“๐‘–๐‘ฆ๐‘–)/(โˆ‘โ–’๐‘“๐‘–) ร— h = 64 + 0/100 ร—1 = 64 Standard Deviation = โ„Ž/๐‘ โˆš(๐‘โˆ‘โ–’๐‘“๐‘–๐‘ฆ๐‘–2 โˆ’ (โˆ‘โ–’๐‘“๐‘–๐‘ฆ๐‘–)^2 ) "= " 1/100 โˆš("100" ร—"286 โ€“ " ใ€–(0)ใ€—^2 ) = 1/100 โˆš28600 = 169.1/100 = 1.691

  1. Chapter 13 Class 11 Statistics
  2. Serial order wise

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo