Set \(A\) consists of \(8\) different integers from the list \(\{1,3,5,7,9,11,13,15,17,19\}.\) What is standard deviatio

[Gmat_mission]

Set \(A\) consists of \(8\) different integers from the list \(\{1,3,5,7,9,11,13,15,17,19\}.\) What is standard deviation of the set \(A?\)

1. Set \(A\) does not include \(11.\)
2. The average of the numbers in the given list is equal to the average of numbers in set \(A.\)

Answer: C

Source: e-GMAT