Quartiles | Lower Quartile, Median, and Upper Quartile | Math with Mr. J

[@MathwithMrJ]

✅ Thanks so much for watching! Check out the information below to learn more about quartiles and some important details that were not covered in the video...
✅ With an odd set of data, you can either include or exclude the median from the lower and upper half of the data. In this video, I used the exclusive method. This means that the median is excluded from the lower and upper half of the data when finding the lower and upper quartile (this means that I excluded the median 8 from the lower and upper half). The other method is called the inclusive method. This means that you include the median in both the lower and upper half when finding the lower and upper quartile. For example, the halves would look as follows with the inclusive method (lower = 1,2,4,7,8 and upper = 8,8,10,14,15). Both methods can be used, but each will give a slightly different result.
✅ Something I’d like to mention about even sets of data is that the lower and upper half can be odd. This is different from the video where the lower and upper half were both made up of four numbers, so each half was even. Here is an example of an even set of data, but each half will be odd:
(1 , 1 , 2 , 3 , 6 , 7 , 7 , 8 , 9 , 12)
There are ten numbers in that data set. That means that the lower and upper half will be five numbers each. In that case, you will have a number directly in the middle for your lower and upper quartile. For this example the median = 6.5 (in between 6 and 7), the lower quartile = 2, and the upper quartile = 8.

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Why do you sound like Mr. Tomato? XD

[@phyllisreese877]

I teach an Adult Education Class and I feel that this video will help the students to gain a better understanding of the process by visually seeing it done and hearing it explained at the same time.

[@LucasFillipus]

Thanks alot sir, I just came in your lesson with nothing and filled me till the fullest 🙏 ❤

[@Alexa56244]

Hi Mr.Jay, Thank you so much! You make math so much easier. I never understanded quartiles but now I feel like they are so simple. Keep up the good work and thank you so much!

[@your_fav._.brunette9362]

im in 6th grade and i just got moved up to an 8th grade statistics class, this helped me understand so much!

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[@blinkeditor__]

this video actually saved me because my maths teacher tried to teach us this and he just kept on making so many errors and was doing this weird over complicated method. until I found this method I realised it’s so easy to workout 😭💀

[@aishaahmed226]

Thanks so much for your video, it really helped me to understand the topic.
this was my first time that i'm looking in on the topic and i found it fun and easy.

[@zwakeleblessing7739]

Thank you so much for the video i now understand Quartiles,you just made it easier for me to understand.. I Appreciate it very much.

[@jernellelouis3432]

Great teaching !!

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i was in the dark but thanks to you i can now see the light❤🥰

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Thank you Mr. J. I can now help my 6th grader with her homework!

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I appreciate this, thank you!

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You've made this so easy to understand

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Very easy and well explained. Thank you.

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Thank you so much Mr. J

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you explained it very well Thank you I couldn't understand it in class when my teacher was explaining address to ass Thank you Mr. Jay

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This helps me a lot

[@bryellaverlecalma6950]

Can you pls do Measurements of position next? The grouped of decile, Percentile, and Quartile. I have a test this week 😢

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Thank you

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really helpful!

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Idk why I'm learning this in 5th grade by myself and enjoying it

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You're gonna have this in 6th grade! I have it atm, so good thing you're preparing yourself

[@veerakanneboina8086]

But in some cases formulas like Q1=(n=1)/4th term are used to calculate the term and then they are interpolating the values. Which is correct. Which one do I have to follow.

[@djj270]

thankyou

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[@jamalnuman]

Why, in the case of journal ranking, does Q1 represent the journals with the highest impact factors rather than the lowest?

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underrated.

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Do you actually teach an class? or just help people with math on youtube.

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My teachers not helping me

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Grammatical error

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If ur tryna help him that’s good

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videos on probabilities please

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life saver

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The best place to come when you don’t listen in class

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Hi sir is that a ungroup data?

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[@saitama3156]

What if there is a frequency given for data set

[@arnobturky1963]

What to do when it's become fraction

[@a.kgaming2360]

SIR CAN YOU CORRECT SOMETHING FOR ME ? THE 25TH PERCENTILE OF THE DATA 16 16 17 21 28 31 39 39 IS 16.25 NOT 16.5?

[@Hikaruu_CODM]

That's what I also got using n+1/4

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Some segments in the video are stamped not adjacent to each other

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support team sea

[@julienbrouillet5079]

It s false because with an even number n of data, the median is (n+1)/2 and will be an k,5 where k is a n integer. Howver, to find a quartile, it will be (k,5+1)/2 which will equal to k,75 or k,25.

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Can u pls do geometry?

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the video image is too poor, you need to fix it more

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you might have the video quality turned down. im at 1080p and it looks fine!

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I was first :D

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Ok

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[@mikeg9715]

This dose not make a lick of sense! I didn't even have this in college math. Who comes up with this crap! Do people just get bored and say let's complicate things?

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Second two comments

[@j.e.santiago7091]

wouldnt 49 divided by 2 = 7?

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No. 7 x 7= 49. If you did 7 x 2 you would get 14

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Noice

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its trash