Average is not working. Help!

Question

number = []

size = 0
def Average(number):
sum(number) / len(number)

for i in range (0,7):
if number != "XXX":
n = input("Enter a number: ")
number.append(n)

print(number)

print("The average is", Average)

Answer 1

Correct but my average function isnt working

Answer 2

I did, on the bottom