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If 'l' is the standard deviation of the elements α,β,γ .Then the standard deviation of the elements α + 3, β + 3, γ + 3 is



If a constant term is added to all the numbers in the data, the standard deviation doesn't change. Standard deviation changes only when different numbers are added. 
So the standard deviation of α + 3, β + 3, γ + 3 is 'I'
2 5 2
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