UWP Runtime Component (class that works with C#, JavaScript and C++) which calculates the average for you extremely easily.
Open the Nuget Package Manager console and enter this command:
Install-Package Averager.ColinKiama
or... In a a Universal Windows Project, go to Tools > NuGet Package Manager > Manage NuGet Packages for Solution then on the "Browse" section, search for "Averager.ColinKiama" then, you can install the package for each project you want to use in your current solution.
There are two ways to use this:
First method:
// Create a list/arrary and enter it as the argument
int[] numbers = {1,2,3};
AverageCalculator.GetAverage(numbers); // returns 2;
Second Method:
// Manually list any number of arguments yourself
AverageCalculator.GetAverage(1,2,3); // returns 2;