Ex 15.2, 4 - Find mean and variance xi fi - Chapter 15 Class 11 - Standard deviation and variance - Discrete frequency (grouped data)

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  1. Chapter 15 Class 11 Statistics
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Ex 15.2, 4 Find the mean and variance for the data Now, finding variance _ ( )2 = 1736 =40 Variance ( 2) = ( _ ( )2 )/( ) = 1736/40 = 43.4

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