Question

Find average of a list in python?

Answer 1

Prerequisites: sum() function, len() function, round() function, reduce(), lambda, and mean().

Given a list of numbers, the task is to find average of that list. Average is the sum of elements divided by the number of elements.

Examples:

Input : [4, 5, 1, 2, 9, 7, 10, 8]

Output : Average of the list = 5.75

Explanation:

Sum of the elements is 4+5+1+2+9+7+10+8 = 46

and total number of elements is 8.

So average is 46 / 8 = 5.75

Input : [15, 9, 55, 41, 35, 20, 62, 49]

Output : Average of the list = 35.75

Explanation:

Sum of the elements is 15+9+55+41+35+20+62+49 = 286

and total number of elements is 8.

So average is 46 / 8 = 35.75

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Answer 2

Average is basically the division of the sum of the numbers by the total number of numbers.

For a list, to add up all the numbers, we use sum() and to find the total number of number in a list, we used the len() command. This calculates the length of the list.

So, to find the average of a list, it's simple.

Let's say out list's name is my_list.

my_list = [1,2,3,4,5]

average = sum(my_list)/len(my_list)

The output would be: 3.0

Hope it helps!