Statistics - Using the 2^k rule to determine the number of classes

This video covers how to use the "2^k" rule to determine the number of classes for a frequency distribution. Remember when determining the width of your classes to round up to the nearest whole integer. For more videos please visit www.mysecretmat...

[@andrewallen215]

You are a Godsend, my teacher threw a book at us and said " your assignments are due on these dates." Without you, I am doomed to fail

[@Tankerbell21]

man...just...thank you...

[@al333neddd]

Thats a great video
thanks a lot mate
Easy , simple, straight to the point
Good work
Cheers

[@magdaryz231]

U

[@sabio101]

Thank you so much! So useful for my one stats assignment. Wasn't clarified at all, how to get "k"...

[@kapitanmik7346]

Thanks for saving my ass.
Got an exam today😂

[@MySecretMathTutor]

Glad I could help! :^D

[@hanusyajayaretnam2578]

if we round off 6.4 , it stays as 6 right? no mehh?

[@TheSmurkey]

you are doing god's work sir

[@abrahamyrn]

This was very helpful , hands up

[@Kim-mp5wg]

isn't the term hands down lol

[@arteleonn]

To find the number of class (n)
m= number of values
N= 1+3.322(log(m)) then round it off
N=1+3.322(log(20))
=5.322≈5
N=1+3.322(log(50))
=6.643≈7

[@Eclectictravelers2]

Omg , I was having hard time til I came across your video, so very helpful . Thank you so much !! ❤

[@cindyclaudya7728]

thank you ..
you helped me to finish my homework :D...

[@shalawk5398]

Where did you bring 5 classes? You did not calculate K? According what you chose 5 classes!

[@simons5704]

It has 5 rolls of numbers, this makes the classes

[@cokrodfarva9959]

Thank you. There are a million videos that show how to find the class width but none on how to find the number of classes.

[@rex6447]

Thank you very much

[@yigitaydoganify]

Very clear thanks for the post

[@khatesipoy2227]

Thank you a lot. You helped me in my thesis

[@kautharsaid5206]

Thank you 🙏🏾

[@soniadivya8498]

Thank You. Really Helpful

[@ankitapaul67]

Thanku sir for clearing 2^k rule

[@simons5704]

Thank you again you guys are awesome!!!!!!!!!!!!!!!

[@BePresentLiveLife]

So helpful!!!!! Very clear and easy to understand!

[@epicman5324]

Thanks!

[@jairuslozano9763]

Thank for this video tutorial 🙂🙏

[@shalomfernandez706]

YOU'RE AMAZING!

[@doranharris3052]

I really think this video is great because I could'nt find any other video that showed the 2^k rule so thank you

[@nonjabulomacu9277]

Thank you, am writing in two hours or so...

[@christianjayvillanueva2335]

Thank you

[@ahmedhussam9259]

Thank you So much !!
So helpful

[@manasabdullkaiyoom3589]

really thank you it was more helpful

[@juangabriel5287]

Kindly solve this when rangw is 4 and 2 is the interval 5 is the highest and 1 is the lowest posible score

[@scarfxce21]

Thanks

[@fifiiinka]

Thank you :) Great video!

[@paulevanderfrias815]

thanks!

[@AA-sx9xu]

Using Tally makes it easier for first time learner to find how many of the data is in each class

[@juangabriel5287]

Kindly solve this when rangw is 4 and 2 is the interval 5 is the highest and 1 is the lowest posible score tia

[@ayeshaakterfitul6838]

You're amazing in teaching ☺️

[@xoppa09]

interesting rule of thumb for determining the number of classes

[@natt773]

Thank you!

[@Sarah-zb]

*Thank you* 💙

[@abdullahabd1305]

Thank you so much

[@TheSFMCreators]

Help!!
I have 20 data points, the largest number is 43 and the smallest number is 3.
I know that for 20 data points I need 5 classes, because 2^4= 16 and 2^5= 32
My class width should then be (43-3)/5= 8 right? But if I do that I can't fit all observations in the classes
My classes then look as follows:
Class | Class width
1. | 3-10
2. | 11-18
3. | 19-26
4. | 27-34
5. | 35-42
But then my largest number (43) doesn't fit in it
And if I choose a higher starting point for the classes, then my lowest number of 3 doesn't fit in it
What am I doing wrong?

[@sjankins1639]

i use this formula when computing for the number of classes K = 1 + 3.322 log (n) where n is the number of data points. after that, to compute for class width i simply use this C = R / K where R is the range (highest data - lowest data). make sure to round to the nearest integer ex. 5.31 rounds up to 6

[@aam7486]

THANK YOU SO MUCH THANK YOU, LIKE SERIOUSLY

[@Vailsec]

You could just take the log of both sides instead. So n=2k, in this case, 20=2k, log20=log2k, divide by log2 on both sides and you end up with 4.3 roughly. So 4 classes. Then max value-min value and then divide by classes (4) which equals 8. You would end up with 0-7, 8-15, 16-23, 24-32

[@ebrainz5489]

Thank you sir

[@Ajauregui]

Thank you!!!

[@widhyawanjuliaris3939]

thanks a lot, this 2k formula really help! 😃

[@bryanwijaya1876]

damn very helpful and very understandable

[@nathanbrown4417]

i have a solution to an assignment where the tutor used 9 as the number of classes for a dataset of 30 data points. Can you comment on it please?

[@abdullahabd1305]

Makes the formula, very efficient and true.

[@yasirhashmi6829]

Plz help. Find the number of classes of x? If x=8,10,11,12,13

[@raeadrianarevalo7665]

how do you know what no. of classes to use

[@riteshmagar6181]

why did he make it an inclusive data and not exclusive ?

[@shazminabangash1244]

Plz someone help me how we would know about the frequency??

[@md.imransheikh7717]

I also aware of this equation, but I need literature support. would you please provide literature support?

[@hanaamaxamed-deeq6400]

I dont get why you start zero while there is 1 visitor isnt it be in the list ?

[@dreamcatcher75418]

Thanks. :)

[@sunnymanvoy]

Amazing.

[@carpediem6422]

Thanks you so much that was helpful .. a good clear explanation.

[@mark653]

shouldn't the class size be 7?

[@anautralztestimony1939]

Thanks Perfect demonstration!

[@shahfibre]

Superb

[@soledadpunzalan2768]

Thanks for this video lesson.May I use this one for my class?Thanks in advance.
God bless

[@alomgirkabir8612]

why can't we use 3^k rule instead of 2^k rule ? can anyone answer please.?

[@saimaliawao7375]

Alomgir Kabir because it's a rule.

[@DheynDn]

really helpful, thanks

[@mohitraina8513]

Can we use this for exclusive method..please tell me I will subscribe your channel then..

[@bta9882]

This formula you give (2^k) does NOT work for all cases! I tried - does not work. I can lay it out for you.

[@michaelmartinez7177]

Thank you, I'm stupid.

[@andujarjj]

nice and easy thank you !

[@jhorysindatoc1118]

really? Rounding up 6.4 to whole number 7? how come? it should be 6

[@batangbisdak9121]

try to listen very carefully before you make a comment. 3:05-3:28

[@king4053]

round it up. not round off.

[@shalomfernandez706]

idiot

[@jueyusof4209]

Y 20

[@empaulstube6947]

the lowest number of observation is 1 not 0..

[@abdullahabd1305]

2 raise to the power of 5 is 32 not 25.

[@aprilhicks3474]

you got 0.1.2.3.4.5.6.... 7 is the size hahahahaha!

[@magdaryz231]

J

[@antb4773]

Why does it always have to be a video???? No one knows how to explain things without videos anymore?

[@sabuchaudhary8480]

Hajur in 888

[@jey524]

False

[@user-oi8wn2np9f]

my brain fucking hurts now

[@thegreatsudent1105]

Thanks

[@amkhant1]

Thank you!

[@tasmiazakariah6278]

Thanks!