-
riteshpatnaik
- Junior | Next Rank: 30 Posts
- Posts: 29
- Joined: Wed Mar 09, 2016 12:55 am
Ian Stewart Vol 2 Q195
The arithmetic mean of set S is zero. If T = {2:22, 1:96, 1:68, 1:62, 1:94, 2:16}
is the subset of S consisting of all those elements in S which are more than two but less than three standard deviations away from the arithmetic mean of S, what could
be equal to the standard deviation of S?
A) 0.54
B) 0.77
C) 0.82
D) 0.97
E) 1.62
I am unable to solve this. Please help
The arithmetic mean of set S is zero. If T = {2:22, 1:96, 1:68, 1:62, 1:94, 2:16}
is the subset of S consisting of all those elements in S which are more than two but less than three standard deviations away from the arithmetic mean of S, what could
be equal to the standard deviation of S?
A) 0.54
B) 0.77
C) 0.82
D) 0.97
E) 1.62
I am unable to solve this. Please help
