math stats with Linq

Question

I have a collection of person objects (IEnumerable) and each person has an age property.

I want to generate stats on the collection such as Max, Min, Average, Median, etc on this age property.

What is the most elegant way of doing this using LINQ?

Answer 1

var max = persons.Max(p => p.age);
var min = persons.Min(p => p.age);
var average = persons.Average(p => p.age);

Fix for median in case of even number of elements

int count = persons.Count();
var orderedPersons = persons.OrderBy(p => p.age);
float median = orderedPersons.ElementAt(count/2).age + orderedPersons.ElementAt((count-1)/2).age;
median /= 2;