and
constant k. The mean of L is zero for any k. But the range
varies substantially.
Just from the mean, we don't get a sense of how spread out the numbers are.
For example, let L[i] = k(i-101) for and
constant k. The mean of L is zero for any k. But the range
varies substantially.
Standard deviation is a measure of ``spread'' around the mean.
,
.
Standard devision of above list is 58.16786 |k| (grows with range).
