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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution
First off what language are you testing this in? Second if you could post your solution and mark it as having spoiler content maybe I could help?
TypeError: number is not a function
at Test.it
at Test.describe
not sure what that error means? I tested my solution outside of the Codewars environment and it works as it should and it sums up the numbers in an array and give me the mean of those numbers.