Ex 15.2, 5 - Find mean, variance - Chapter 15 Statistics - Standard deviation and variance - Discrete frequency (grouped data)

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  1. Chapter 15 Class 11 Statistics
  2. Serial order wise
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Ex 15.2, 5 Find the mean and variance for the data Now, finding variance _ ( )2 =640 =22 Variance ( 2) = ( _ ( )2 )/( ) = 640/22 = 29.09

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