If R is a negative integer and K is a positive integer, which of the following could be the standard deviation of a set {-7, -5, -3, R, 0, 1, 3, K, 7}?
I. -1.5
II. -2
III. 0 Pick:
A) I only B) II only C) III only D) I and III only E) None
The answer should be (E) as S.D cannot be negative. It is only 0 if all numbers in the set are equal, which is not the case either.None
<result>E</result>
If R is a negative integer and K is a positive integer, which of the following could be the standard deviation of a set {-7, -5, -3, R, 0, 1, 3, K, 7}?
I. -1.5
II. -2
III. 0