Answer to Question #179423 in Python for CHANDRASENA REDDY CHADA

Question

Mean, Median and Mode

Given a list of integers, write a program to print the mean, median and mode.

Mean - The average value of all the numbers.

Median - The mid point value in the sorted list.

Mode - The most common value in the list. If multiple elements with same frequency are present, print all the values with same frequency in increasing order.Input

The input will be a single line containing space-separated integers.Output

For example, if the given list of integers are

2 6 3 1 8 12 2 9 10 3 4

The average of all the numbers is 5.45

After sorting the array,

1 2 2 3 3 4 6 8 9 10 12

as the length of the list is an odd number, the median will be the middle number in the sorted list. So the median will be 4.

As 2 and 3 are having the same frequency, the mode will be 2 3.

So the output should be

Mean: 5.45
Median: 4
Mode: 2 3

Sample Input 1

2 4 5 6 7 8 2 4 5 2 3 8

Sample Output 1

Mean: 4.67

Median: 4.5

Mode: 2

Sample Input 2

2 6 3 1 8 12 2 9 10 3 4

Sample Output 2

Mean: 5.45

Median: 4

Mode: 2 3

Answer 1

def find_mean(numbers):
    return sum(numbers)/len(numbers)




def find_median(numbers):
    if len(numbers)%2 == 0:
        return (numbers[(len(numbers)-1)//2] + numbers[(len(numbers)+1)//2])/2
    return numbers[len(numbers)//2]


def count_frequency(numbers, number):
    frequency = 0


    for i in range(len(numbers)):
        if numbers[i] == number:
            frequency += 1


    return frequency


def find_max_frequency(frequencies):
    return max(frequencies)


def find_modes(numbers):
    frequencies = []
    
    for number in numbers:
        frequency = count_frequency(numbers, number)
        frequencies.append(frequency)


    max_frequency = find_max_frequency(frequencies)
    modes = []
    
    for number in numbers:
        frequency = count_frequency(numbers, number)
        if frequency == max_frequency and number not in modes:
            modes.append(number)


    return modes


            


numbers = [2, 6, 3, 1, 8, 12, 2, 9, 10, 3, 4]
numbers.sort()


mean = find_mean(numbers)
median = find_median(numbers)
modes = find_modes(numbers)


print("Mean: ", round(mean,2))
print("Median: ", median)
print("Mode: ", end='')


for mode in modes:
    print(mode, end=" ")