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Ex 15.2, 3 - Find mean, variance for first 10 multiples of 3 - Standard deviation and variance - Ungrouped data

Ex 15.2, 3 - Chapter 15 Class 11 Statistics - Part 2


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Ex 15.2, 3 Find the mean and variance for the first 10 multiples of 3 First 10 multiples of 3 are 3, 6, 9, 12, 15, 18, 21, 24, 27, 30 (xi )2=74.25 Variance ( )2 = ( (xi )2 " " )/ = 742.5/10= .

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.