`mean-sd-n``items`procedurereturns three

**values**, one for the mean, one for the standard deviation, and one for the length of the list.> (mean-sd-n '(1 2 3 4)) 5/2 1.29099444873581 4

`mean-sd-n``items`procedurereturns three

**values**, one for the mean, one for the standard deviation, and one for the length of the list.> (mean-sd-n '(1 2 3 4)) 5/2 1.29099444873581 4