final ver

#I tried to start with Row 1 instead of 0 in the lists, but for some reason repl.it would return "IndexError: list index out of range" when trying to print it, so I had to stick with starting at Row 0. Please look at this if you can to see if I could have made it work somehow.

#Joseph Shaw
#Menu driven program


# create a list with given values
list = [3,4,84,5,2,47,7]
# sorting of list
list.sort()
#print choices
print("1. factorial \n2. median \n3. average \n4. maximum \n5. minimum \n6. exit\n")

#create stringArray for functions
stringArray = []

#create answersArray for answers
answerArray = []

# function to calculate factorial of 20
def factorial(n):
    fact = 1
    # calculate factorial of 20
    for i in range (1,21):
        fact = fact * i
    # print factorial
    print("factorial is : ",fact)
    stringArray.insert(0, 'Factorial')
    answerArray.insert(0, fact)
    #print(stringArray[0])
    #print(answerArray[0])


# function of find median of list (middle value in array)
def median(list):
    # find median of list
    median = list[(len(list)-1)//2]
    #print median
    print("median is : ",median)
    stringArray.insert(1, 'Median')
    answerArray.insert(1, median)


# function to calculate average
def average(list):
    # sum(answerArray) for sum of list and len(answerArray) for length of list
    avg = sum(list)/len(list)
    #print average
    print("average is : ",avg)
    stringArray.insert(2, 'Average')
    answerArray.insert(2, avg)


# function to find maximum number in list (last element in sorted list)
def maximum(list):
    # find maximum number in list
    max = list[len(list)-1]
    # print maximum number
    print("maximum is : ",max)
    stringArray.insert(3, 'Maximum')
    answerArray.insert(3, max)


# function to find minimum number in list (first element in sorted list)
def minimum(list):
    # find minimum number in list
    min = list[0]
    # print minimum number
    print("minimum is : ",min)
    stringArray.insert(4, 'Minimum')
    answerArray.insert(4, min)

while True:
    # enter choice
    choice = int(input("Enter your choice \n"))
    # for factorial of 20
    if choice == 1:
        n=20
        factorial(n)
    # for median of list
    elif choice == 2 :
        median(list)
    # for average of list
    elif choice == 3 :
        average(list)
    # for maximum of list
    elif choice == 4 :
        maximum(list)
    # for minimum of list
    elif choice == 5 :
        minimum(list)
    # for break program after run all choices
    elif choice == 6 :
        #factorial(20)
        print("{} of 20 is: {}".format(stringArray[0], answerArray[0]))
        #median(list)
        print("{} is: {}".format(stringArray[1], answerArray[1]))
        #average(list)
        print("{} is: {}".format(stringArray[2], answerArray[2]))
        #maximum(list)
        print("{} is: {}".format(stringArray[3], answerArray[3]))
        #minimum(list)
        print("{} is: {}".format(stringArray[4], answerArray[4]))
        break;
    # enter valid choice
    else:
        print("please enter valid choice")