public void ShouldCalculateCorrectAverageUsingMedian()
{
int[] collectionOfNumbers = { 13, 18, 13, 14, 13, 16, 14, 21, 13 };
var expectedAverage = 14;
var calculator = new Median();
var actualAverage = calculator.Average(collectionOfNumbers);
Assert.That(actualAverage, Is.EqualTo(expectedAverage));
}