The standard deviation of the set {10, 11, 9, 11, 9}A. 1/√5B. 2/√5C. 3/√5D. 0

The standard deviation of the set {10, 11, 9, 11, 9}A. 1/√5B. 2/√5

1.	The standard deviation of the set {10, 11, 9, 11, 9}A. 1/√5B. 2/√5C. 3/√5D. 0
A.	B
B.	D
C.	C
D.	A
Answer» B. D