median

The median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average. The median is sometimes used as opposed to the mean when there are outliers in the sequence that might skew the average of the values.

a median is a value separating the higher half from the lower half of a data sample, a population or a probability distribution. For a data set, it may be thought of as "the middle" value.

def median(arr):
  
  if len(arr) == 1:
    return arr[0]
    
  else:
    arr = sorted(arr)
    a = arr[0:round(len(arr)/2)]
    b = arr[len(a):len(arr)]
    if len(arr)%2 == 0:
      return (a[len(a)-1]+b[0])/2
    else:
      return a[len(a)-1]

Median of a triange is a line that goes from a vertex of the triangle
to the midpoint of the opposite side of that vertex.