Possibilities when I have n possible values and averageError

import random
import math

print("This is a game that will show you the power of possibility and randomness,")
print("when we have many iterations of a phenomenon based on luck/randomness")
print("In this problem, I have a quantity that can take 'n' possible values (possibility = 1/n).")
print()
n = int(input("First, enter the number n, whose possibility (1/n) you want to check: "))
print("You chose number " + str(n) + ". We all know that if we have " + str(n) + " numbers, the possibility of appearance one of them is: 1/" +str(n) + " = " + str(100/n) + "%.")
simulations = int(input("Now, enter how many simulations you want me to run (prefer to be large number like 10000 or more): "))
counters = []                              # For example, counters[0] will count how many 1 (assoi) are there, counters[1] how many 2 (dyaria) are there

for i in range(n):
    counters.append(0)                     # After this for-loop, I will have n elements in my list and each element will have the value 0 (0 appearances yet)

for i in range(1, simulations+1):
    r = random.randint(1, n)                # Create a number, whose value is: 1 or 2 or 3 or ..... or n
    counters[r-1] += 1          # If r = 4 for example, I want to increase the counter that symbolizes the appearances of number 4
                                            # so I have to increase by 1 the element r-1 in list "counters"

print("In this session, we have the following results: ")
print()
print("                Appearances        Possibility        % Possibility                Error")
errors = []                         # In this list, I will put all the errors %, so I can find the average error

for i in range(n):
    error = abs(counters[i]/simulations*100 - 100/n)
    print("  Value " + str(i+1) + ":          " + str(counters[i]) + "             " + str(counters[i]/simulations) + "             " + str(counters[i]/simulations*100) + "%             " + str(error) + "%")
    errors.append(error)

# For average error
sum = 0.0
for i in range(len(errors)):
    sum += errors[i]
averageError = sum / len(errors)
print()
print("Average error: " + str(averageError) + "%")