Averages/Arithmetic mean: Difference between revisions

Write a program to find the mean (arithmetic average) of a numeric vector. The program should work on a zero-length vector (with an answer of 0).

That is, sum divided by the number of items. The verb also works on higher-ranked arrays. For example:

The computation can also be written as a loop. It is shown here for comparison only and is highly non-preferred compared to the version above.