def median(numbers): '''Return the median of the list of numbers.''' # Sort the list of numbers and take the middle element. n = len(numbers) copy = numbers[:] # So that "numbers" keeps its original order copy.sort() if n & 1: # There is an odd number of elements return copy[n / 2] else: return (copy[n / 2 - 1] + copy[n / 2]) / 2 def mode(numbers): '''Return the mode of the list of numbers.''' #Find the value that occurs the most frequently in a data set freq={} for i in range(len(numbers)): try: freq[numbers[i]] += 1 except KeyError: freq[numbers[i]] = 1 max = 0 mode = None for k, v in freq.iteritems(): if v > max: max = v mode = k return mode