Set A = {10, 12, 4, 6, 9, 7}
In set A, how many numbers fall within one standard deviation of the mean?
(A) 2
(B) 3
(C) 4
(D) 5
(E) 6![]()
In set A, how many numbers fall within one standard deviation of the mean?
(A) 2
(B) 3
(C) 4
(D) 5
(E) 6