A set of observations x1, x2, x3, x4, has a standard deviation = 6. Each of these observations is added with a constant k. What is the new standard deviation?

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1.	A set of observations x1, x2, x3, x4, has a standard deviation = 6. Each of these observations is added with a constant k. What is the new standard deviation?
A.	10
B.	8
C.	6
D.	4
Answer» D. 4

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