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

Welcome to Quartiles with Mr. J! Need help with finding the lower quartile, median, and upper quartile? You're in the right place!

Whether you're just starting out, or need a quick refresher, this is the video for you if you're looking for help with quartiles. Mr. J will go through quartiles examples (both odd and even sets of data) and explain the steps of how to find the lower quartile, median, and upper quartile.

About Math with Mr. J: This channel offers instructional videos that are directly aligned with math standards. Teachers, parents/guardians, and students from around the world have used this channel to help with math content in many different ways. All material is absolutely free.

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Hopefully this video is what you're looking for when it comes to finding quartiles.

[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.

[phyllisreese]

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 🙏 ❤

[your_fav._.brunette]

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

[Alexa]

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!

[rafi]

Thank you so much! You just made my life so much easier lol

[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 😭💀

[Unknow_abyss]

Not even scared of my maths exam if this guy is around

[MargaretArnold-ve]

Thanks man, now I understand it better.

[FrankPalaia-ii]

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

[GwadzillaZilly]

MR. J be coming in a clutch during test

[aishaahmed]

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.

[itsupstart]

Very good video. This helped me with my statistics course

[barididumlerasi]

Very easy and well explained. Thank you.

[zwakeleblessing]

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.

[estheroowohjide-salau]

Thank you so much 🙏🏽
You've made this so easy to understand

[kayleeflory]

i didnt get the textbook, this helped so much thank you!

[lindsay]

Thanks for the video, it made this topic very easy to understand!