Set J consists of the terms {a, b, c, d, e}, where e > d > c > b > a > 0.5. Which of the following operations would decrease the standard deviation of Set J?
Pick.
A) Multiply each term by e/d B) Divide each term by b/c C) Multiply each term by −1 D) Divide each term by d/e E) Multiply each term by a/e
CONCEPT: Standard Deviation is Defined as Average Deviation of Terms in the set from the Mean value of the set. i.e.   1) It depends on the separation between the successive terms of the set   2) If a Constant Value is Added/Subtracted in every terms of set then the Separation between successive terms does NOT change Hence S.D. remains Constant   3) If a Constant Value is Multiplied in every terms then the Separation between succesive terms gets multiplied by the constant Hence S.D. remains gets multiplied by same Number   Multiply each term by a/e
<result>E</result>
Set J consists of the terms {a, b, c, d, e}, where e > d > c > b > a > 0.5. Which of the following operations would decrease the standard deviation of Set J?