Copy-paste code

a = [2, 3, 93, 18]
b = [27, 81, 11, 35]
c = [32, 105, 1]

total_a  = 0
for v in a:
    total_a += v
print("sum of a: {} average of a: {}".format(total_a, total_a / len(a)))

total_b  = 0
for v in b:
    total_b += v
print("sum of b: {} average of b: {}".format(total_b, total_b / len(b)))

total_c  = 0
for v in c:
    total_c += v
print("sum of c: {} average of c: {}".format(total_c, total_c / len(a)))

sum of a: 116 average of a: 29.0
sum of b: 154 average of b: 38.5
sum of c: 138 average of c: 34.5

Did you notice the bug?