Set #1 = {1, 3, 5, 7}
has a standard deviation of A, and
Set #2 = {1, 9, 25, 49}
has a standard deviation of B.
How do A & B compare?
A < B
The second set is each number in the first set squared. When we square numbers, they tend to space out more, as they do here, so the standard deviation is larger in the second set.