What are aggregate operators?

Aggregate operators perform calculations on a set of values and return a single value. The aggregate operators are Average, Count, Max, Min, and Sum.

List < int > data = new List < int > {
	10, 20, 30, 40, 50
};
//Sum of numbers
Console.WriteLine(data.Sum()); //result:150
//Average of numbers
Console.WriteLine(data.Average()); //result:30
//Max of numbers
Console.WriteLine(data.Max()); //result:50