web analytics

Ex 15.2, 6 - Find mean, standard deviation using short-cut - Standard deviation and variance - Discrete frequency (grouped data)

Slide11.PNG

  1. Chapter 15 Class 11 Statistics
  2. Serial order wise
Ask Download

Transcript

Ex 15.2, 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

About the Author

CA Maninder Singh's photo - Expert in Practical Accounts, Taxation and Efiling
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 8 years. He provides courses for Practical Accounts, Taxation and Efiling at teachoo.com .
Jail