How to Make a Grouped Frequency Table (Grouped Frequency Distribution Table) | Math with Mr. J

[@MathwithMrJ]

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[@n0tDiorDTI]

I started this video thinking it would make zero sense but as I kept watching I realised that I finally understood frequency tables 😭 you have saved us all

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This guy is the reason I graduated thank you so much

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E

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You saved my life I sincerely thank you.

[@DrCorndog1]

The class width is only the "number of numbers" in the class when you're dealing with integers. A better way to describe the class width is as the difference of corresponding limits in consecutive classes. In this example, either 30 - 20 or 39 - 29 would give you the class width of 10 (as would 60 - 50 or 49 - 39). This definition works even when your data aren't integers (and has the added bonus of emphasizing the uniformity of the class width across all classes).

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i appreciate the way you break everything down, i was so lost in class and after watching your video i feel confident !!!

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[@abocado121]

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[@Eggy_Head]

Same bru

[@monaa6290]

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[@sternsiangandu7310]

How were you finding the frequency??

[@All_categories1704]

Thank you ❤

[@kasualvfx4985]

For the class width, you actually round down instead. It’s weird but is true

[@Keith__san]

Thanks Mr. Helped a lot!

[@Qk1ng]

Hello there i need this for my exam ty

[@asfakhalwai2751]

Good

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[@yartemarthenaredeemeb.l2017]

please, im crying rn. where did you get the five

[@Prodbylaura]

Thanks

[@hishamibrahim7659]

This video for what year??

[@abdullazanki2953]

8

[@Lyra_myworld]

5

[@marknorth3777]

​@@BarevHayerin you don't have to say bad stuff this is a kids channel too

[@csxhboizi0n]

9

[@BarevHayerin]

12

[@venuseditz8929]

Very nicely explained

[@BLAZEPLAYZ2730]

question how did you got 5??/

[@Godbacked_daughterr]

5 for classes??

[@yartemarthenaredeemeb.l2017]

@@Godbacked_daughterr huh?

[@KyotoCombo-e2t]

He did a mistake 8.4 rounding up =8 because 5 to 9 is u round up and 1to 4 is to keep the number and remove 4

[@anttionparkerq4635]

Cool

[@muhammad7132]

Sir it is inclusive classes right ?

[@StatheresaGulles]

Mr where di you get the 5

[@WalnutBrownie-g6o]

Why does 8.4 round up to 9 instead of rounding down to 8 ? It's below 5

[@elizabethamoako2281]

Pls what if I did not include the 20 will I start from 21-29or 30

[@chanii_3]

Where did the 5 come from?

[@naturalhair-l7y]

How he found the number5?

[@Kim-mp5wg]

He's probably using the 2 k ≥ n rule, where 2 to the power of k is greater or equal to n. k is the amount of classes while n is the amount of observations. So in this case the amount of observations is 30. You find k by seeing which number squared by 2 is greater or equal to 30. So 2 squared by 5 is 32 (greater than 30), which is why the number of classes for this case is 5.

[@geilyfishh]

So okay, how do you find out the observation exactly?

[@Kim-mp5wg]

@@geilyfishh You count how many numbers (also known as variables) you see under 'ages of high school teachers' which in this case is 30. Also shown as n = 30, where n equals the amount of observations.

[@mathewdevera7152]

​@@Kim-mp5wg any other way? Im grade 7 and we still havent that rule.

[@Kim-mp5wg]

@@mathewdevera7152 If you weren’t taught this rule i would say just guess how many classes you need. But if you want to know more about this rule, then search up 2kn rule classes, on youtube, and a video by mysecretmathtutor should come up. He made me understand this rule so he might help you.

[@Catscradle1990]

Why didn't you add one to the range? Shouldn't it be highest number subtracted from the lowest plus 1?

[@chukwuwikebartholomew9259]

Nope U don't add 1 to it

[@irenemalaque9014]

I this one is wrong based on what my instructor teach

[@tabbyblu771]

But why use ten ...this might get me a zero on this question 😢

[@PaladinianDaGoat]

What happens if class width has a decimal?

[@kaiken777]

You round it up

[@choiyumin3894]

Round up to whole number

[@mathewdevera7152]

HOW DID YOU FIND NUMBER 5😢😢

[@iluvseaa]

It’s usually given in the problem

[@ElizeSaliva]

how he get 5 classes (groups)? help

[@melhordelacruzx5911]

Age group

[@idirisxaashi8965]

C.l =1+3.322logN N is the counting of data

[@idirisxaashi8965]

1+3.322log30 Is 5

[@idirisxaashi8965]

Hi from Somaliland

[@tudortan]

8:05

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Yesss

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60-69

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First

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worst teach ever

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[@MuhammadBashir-jt7zk]

To much bakzas

[@elizabethamoako2281]

Pls what if I did not include the 20 will I start from 21-29or 30