2015-5: He's so mean, he has no standard deviation
The standard deviation of a population is calculated by taking the square root of the average of the squared differences of the values from their average value. The mathematical formula is:
where x̄ is the mean average value and n is the number of values.
Write a function that returns the population standard deviation of its numeric array right argument.
Examples:
(your_function) 1 2 3 4 5
1.414213562
(your_function) 10 10⍴⍳100 ⍝ and higher dimensions as well
28.86607005
your_function ←
Solutions
