Beginner Python Tutorial - Mean Median and Mode

In this short lesson, we create a simple Python program that calculates the mean, median, and mode from a set of numbers.

#python3 #pythontutorial #learntocode

Intro music by GhostxMachine

[UnpopularGameGuy]

For mean, another clean way to do this, without using a for loop would be:

def mean(nums):
return sum(nums) / len(sums)

print(mean([2, 5, 9, 8, 6, 2, 5, 4]))

# this will print the mean of this list of numbers. We defined a function called mean, and have a parameter of "nums" that will pass through it. We then used the return function to take the sum(nums) and divide them by the length(nums). Finally, we called the mean function with a random list of numbers! Should equal 5.25, or if you wanted only integers and no float (decimal numbers), you could add a second divide symbol .... return sum(nums) // len(sums) = 5

[almightysun]

Thanks this tutorial was so good and easy to understand! :)

[venkannababu]

Here is the code for multiple modes in the list.

def find_mode(list_n):
#let convert list into sets so no duplicates
new_set = set(list_n)
new_list = list(new_set)
counts = []
for i in range(len(new_list)):
counts += [list_n.count(new_list[i])]
max_count = max(counts)

index = counts.index(max_count)
print(new_list[index], end=" ")

for i in range(index+1, len(counts)):
if(max_count == counts[i]):
print(new_list[i], end=" ")


# Taking the input as integers using the map function
list_n = list(map(int, input().split()))

#calling function
find_mode(list_n)

[louierattatouie]

Thank you so much for this tutorial! You are a great help! Definitely subscribing!

[vazhaabdu]

Nice video, however, the code you wrote for fining mode will only work finding one mode.and in most cases there are multiple modes in lists.also if your list has same amount of different numbers(for example [2, 2, 3, 3]) then it will still say that mode is 2 in this case when there is no mode.

[renee]

IDK why you didn't show how to find median if we have 5 numbers / if there was one number in middle

[paulmcgreevy]

can you show this while not using a cut and paste from another site? where would the numbers we want a mean, median and mode from be actually typed into the code and how?

[srimanikanta]

what we do, when we have execute more no of modes in a given list. how can we run

[borykalderassoumou]

This mode coding is only for an unimodal distribution. How about a multimodal i.e bimodal?

[johnkiruba]

How come the tuple values change once after declared?
In a list of no recurring numbers how does the func returns the least value in the list? I mean where does the sort happen?
Please Explain!
thank you.

[guttamuneendra]

How to print two modes in single line ( if Two modes in list)

[ladislousfarawadya]

the program only shows one mode even if there are two, anyways thanks a lot

[bilalwarsi]

what's that ' != 0 ' in the median part? I tried it out and it said invalid syntax, i need help, thanks.

[bikramchettri]

Hey how can we add input field dynamically ?

[majorgeneral]

You said simple? explodes in shear stupidity.

[yohomietony]

When I try the mode, the answer is always the first number in the list.
Ex. (3, 4, 5, 5, 6) the mode should be 5 but it outputs 3.
Could you see if it does the same thing for yours?

[noufalsuhaim]

what if i want to enter the size of the list and then enter my list and calculate it ?