Example 9 - Find variance and standard deviation - Class 11 - Standard deviation and variance - Discrete frequency (grouped data)

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

Transcript

Example 9 Find the variance and standard deviation for the following data: First we will calculate mean Now, finding variance 2 = 1374 =30 Variance ( 2) = 2 = 1374 30 = 45.8 Standard deviation ( ) = 45.8 = 6.76

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.