-
Max@Math Revolution
- Elite Legendary Member
- Posts: 3991
- Joined: Fri Jul 24, 2015 2:28 am
- Location: Las Vegas, USA
- Thanked: 19 times
- Followed by:37 members
Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
Que: 40, 50, 60, 70, 80, 90, 100, 110, 120, 130
The list above shows the scores of 10 students obtained on a scheduled test. If the standard deviation of the 10 scores is 30.28, how many of the scores are greater than one standard deviation above the mean of the 10 scores?
(A) None
(B) One
(C) Two
(D) Three
(E) Four
The list above shows the scores of 10 students obtained on a scheduled test. If the standard deviation of the 10 scores is 30.28, how many of the scores are greater than one standard deviation above the mean of the 10 scores?
(A) None
(B) One
(C) Two
(D) Three
(E) Four
Math Revolution
The World's Most "Complete" GMAT Math Course!
Score an excellent Q49-51 just like 70% of our students.
[Free] Full on-demand course (7 days) - 100 hours of video lessons, 490 lesson topics, and 2,000 questions.
[Course] Starting $79 for on-demand and $60 for tutoring per hour and $390 only for Live Online.
Email to : [email protected]
