Timer
00:00
Answers
A
B
C
D
E
Stats
Difficulty—
\(\{9,12,15,18,21\}\)
Which of the following pairs of numbers, when added to the set above, will increase the standard deviation of the set?
I. 14, 16
II. 9, 21
III. 15, 100
(A) II only
(B) III only
(C) I and II
(D) II and III
(E) I, II, and III
Answer: D
Source: Manhattan GMAT
Which of the following pairs of numbers, when added to the set above, will increase the standard deviation of the set?
I. 14, 16
II. 9, 21
III. 15, 100
(A) II only
(B) III only
(C) I and II
(D) II and III
(E) I, II, and III
Answer: D
Source: Manhattan GMAT
