How to Find the Interquartile Range of a Set of Data | Statistics
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- Опубліковано 29 вер 2024
- How do you find the interquartile range of a set of data? What is the interquartile range? In this video we go over an example of finding the interquartile range (IQR), or inter-quartile range if you prefer it hyphenated. We define interquartile range as well, if you're into that sort of thing. Hot dog eating contest statistic retrieved from nowhere at all. Let me know if you would like more statistics lessons! Stats for life. #apstats #statistics
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Find IQR with ANY Data Set: • Find Interquartile Ran...
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Rapping 17,000 Digits of Pi, if that's your thing: ua-cam.com/video/Qt4pdX-w2JA/v-deo.html
how if the answer is negative can i put that an answer
What will happen if we have 9 numbers...
Anyone else here since your online teacher just assigns things without teaching you?
Thanks for watching and I hope your online teacher decides to do his/her job soon, and if not they might kindly send me a portion of their paycheck! :p Let me know if you ever have any lesson requests!
Currently experiencing this in statistics 🥺
@@The_Salty_Spitoooon same, my teacher is just all over the place
HONESTLY!!!!!!!!
Omg YESSSS
It takes you 3 minutes to explain what took my teacher an hour and a half
So glad it helped! Thanks for watching and let me know if you ever have any questions. I hope your teacher can start explaining things a little more swiftly!
omg so true thats y i hate math so much like GET TO THE POINT
@@kevserdagasan2547 That might be the exact reason you are not the best at math? You cant skip proccesses of math so if you just wanted to get the equation, you would completely forget how you got to that equation?
its because your teacher is teaching in away that he has to worry about the students douts and misunderstandings while in youtube video he can just explain the concept without having to worry about the audience knowing that you can always rewatch the video. I hate when people put these comments because very rarely the teachers are actually bad its just that you probably you don't pay attention.
oh my gosh thank you! I forgot to take my ADHD medicine on the day i was learning this so for about 4 days i have been procrastinating learning this and it is necessary on my test on friday! The fast pacing made it easy for me to comprehend what was going on!
So glad it helped, thanks for watching! I remember in school when my best friend forgot to take his ADHD medicine, it usually lead to a pretty fun day haha, but it probably wasn't best for his learning!
The most simple and easy to understand. Thank you very much!
Thank you ! I’m a drop out and finally need this class to get my diploma super helpful !
Glad it helped, and good work on finishing things up to get that diploma :)
diploma are you from america
My school teacher was not able explain this beautifully, THANK YOU SO MUCHH😊😊
You're very welcome! I'm glad it helped and thanks a lot for watching!
thank you so SO much! i have a maths exam tomorrow and i had no clue on how to do it but it makes SO much sense now. thank you!
You're very welcome, I'm so glad it helped! Good luck! My stats class has an exam in a couple days, here's to some successful stats exams for everyone!
This man is legend of math I understanded it so fast
So glad it helped, thank you for watching! I think of myself as more of a rap legend though 🎤 ua-cam.com/play/PLztBpqftvzxW7a66b0dJPgknWsfbFQP-c.html
im actually very surprised to me this topic is hard but after this video it was too easy you my friend got 3 new subs
So glad it helped! Thanks a lot for watching and let me know if you ever have any video requests!
Thanks, and it's so easy & simple!
Thank you. MY school uses very cheap and stupid explanations and I stopped watching the schools and found yours and it finally makes sense
So glad it helped! Thanks for watching, and I hope your school stops using stupid explanations!
I wish if there was a way to switch my statistics teacher with you!
I appreciate the positive feedback! Though I wish your stats teacher were better, haha!
I- these comments weren't lying... THANK YOU!!!
My pleasure, thanks for watching! If you're looking to relax and vibe after studying, consider checking out my math raps: ua-cam.com/play/PLztBpqftvzxW7a66b0dJPgknWsfbFQP-c.html
I’m a test that is for people 3 grades higher than me. This helped me a lot.
Thanks for watching, Allen and I am glad it helped! Good luck on your test!
same but with a math packet
This guy deserves some head fr 🙏🏾
thank you! helped me with my exam revision
You're welcome, I am glad it helped!
Terrific! Fantastic, that was so easy to understand now. Thank you
You're very welcome, thanks for watching!
i know this might sound stupid but if there is a 0 do we still put that on the organized number line i just want to make sure
Good explanation sir,but maintain slow range ,I understood but some of them r didn't get properly,so let's have a look on this error 👍👍apart from this all nice explanation sir 👍
Thanks for watching! If you have any questions I can help clear up, let me know!
Thanks a lot from Italy
No problem, thanks for watching!
Thanks! This helped a lot :)
You're welcome! I am glad it helped, and thanks for watching!
Legend, You helped me so much
So glad it helped, thanks for watching!
Thank You!
BEAUTIFUL! thank u so much
My pleasure, thanks for watching and let me know if you ever have any questions!
i can't really understand the one in my module so i also want to ask what happened to the .25 of 2 because i solve for the Q1 and what i get is 2.25 so I'm wondering where did the .25 go
i hope you reply :>
Great explanation thx
Glad it was helpful!
Thanks! ez explanation
Holy crap this helped so much
Glad to hear it, thanks for watching!
Yess it did thanks
Thanks for watching!
omg this helps so much (same thing happens that Legendary1Cora said)
So glad it helped! Let me know if you ever have any questions and thanks for watching!
Great vid man
Thank you!
what a genius :0
Thanks
How did you get the 6, 5
THANK YOUUU
thank youuu it really helped
Glad to hear it, thanks for watching!
my saviour my lord!!!
thank you
Glad to help!
thank youuuu
My pleasure, thanks for watching!
So the IQR is the same as the median?
Thanks for watching and not quite, the IQR is related to the median, but they're not the same. Let me briefly list the steps here once more.
1. Find the median of your data. This splits the data into two halves: the half below your median, and the half above your median (you can ignore the actual median at this point).
2. Find the median of the lower half of data (this is Q1).
3. Find the median of the upper half of data (this is Q3).
4. The IQR is Q3 - Q1.
Does that help?
@@WrathofMath But Q3-Q1=Q2. Q2 but the middle.
That's just a coincidence. Our ordered data set was 1, 1, 3, 4, 5, 6, 7, 8. Suppose we changed 4 to 5. Then the median would be 5, Q1 would still be 2, Q3 would still be 6.5, and so the IQR would still be 4.5, which does not equal the median. Does that make sense? Sorry for any confusion!
@@WrathofMath Ahh yeah. That does make sense. Thanks a lot!
if its a large number like 34,67 how can i find the number between ?
Thanks for watching and good question! The number halfway between is just the average of the two numbers. The number halfway between 3 and 5 is 4, which is the average of 3 and 5: (3+5)/2 = 8/2 = 4. Similarly, the number halfway between 34 and 67 is the average of them: (34 + 67)/2 = 101/2 = 50.5.
Thanks
My pleasure, thanks for watching!
What am I going to do if there are 50 set of data?
I'm calculating the IQR with R, and I obtained another thing. Can you explain me, why?
Thanks for watching and you mean R the programming language? If you programmed it to do precisely what we did here and it is giving a different result there must be an error in the code, but if R has a built in IQR function, it must be calculating it a different way, or it's possible you entered the data incorrectly. I am not familiar with R so I don't know about its IQR function if it has one.
I was talking about R the programming lenguage, thanks for answer.
Sorry to say this, but I disagree with the method you used here as the result maybe wrong.
When using the formula (n+1)/4 to find the Q1's positions, you get 2.25, that means Q1 is more close to the second data (1) instead of right in the middle between 1 and 3. so the Q1 = 1x0.75+3x0.25= 1.5 Same to Q3, use 3(n+1)/4, you get 6.75, so Q3=6x0.25+7x0.75=6.75 and IQR= Q3-Q1=5.25
Hope you could rethink the method you use, and give a new tutorial on this topic, as many students may learn from this video and make mistakes in their exams.
statistics is why I’m here 🥲🔫
thankss 😍
You're welcome, thanks for watching!
😍😘😍😍
King
How you get 2 & 6.5?
He get 6.5 cause that's between 6 and 7 he did the same with 1 and3
Bless u 🙏
Thank you for watching!
My teacher makes us do so much bullshit to find the iqr, and all you need to do is split it in half and find the median in both halves...
Glad this helped simplify things! Thanks for watching and let me know if you ever have any questions!
You explained more in
thats because you dont listen and focus🤣
@@qulas23195 Or they had a bad teacher who didn't explain it in a way for them to understand
Thank you
Thank you for watching! Let me know if you have any lesson requests!
OMGG THANK YOUUU I ALMOST FAILED THIS ASSIGNMENTTTTT
So glad it helped! Thanks for watching!
What I’m doing my beginning of year test☠️
D. K SAME LMAOOO
Wrath of Math you big old mince
Likewise
I'm just trying to figure out how they only ate one hotdog In 5 minutes
this made me laugh harder than it probably should have
I would probably down about 3 lol
The fact that he still reply’s to comments after 3 YEARS is unbelievable you just got a new sub
Thank you! I will be here, until I turn to dust!
Lol
Thank you this was so helpful! I literally forgot everything we learnt in year 7 ages ago oops
It can be easy to forget after some time passes, I am glad the lesson helped and thanks for watching!
lmaoo same im doing a gcse past paper rn and completely forgot how to do this
teacher hands out work
me: How do we do th-
teacher: Ok students, get started.
Sorry to hear that's your teacher experience! The internet is definitely your friend in that situation, but don't fear the textbook either - they're often very helpful if you give them a chance. Look up your desired topic in the index, and read the definitions/examples! I learn almost all math from textbooks these days. Thanks for watching!
@@WrathofMath ya can’t believe how much this helped!
^_^ I have a presentation but now I am happy.
Thanks for watching and I am glad you're happy!
i understood it at first but you lost me at some point😭
failed a test today and the teacher let me resub tmw . wish me luck
How did that go😂
@@greekyogurt5014 past, 😅😅😅 i actual failed again but he quickly just told me to fix it and he passed me.
Thank you, explained so simply and to the point I needed a refresher for my stats class this really helped!
this video helped a lot with my homework, thanks.
I'm glad it helped, thanks for watching!
Trash
@@tobiasdrums1 Trash - Tremendously Rigorous, Awesome Statistics Help
Tobias Drums yeah noob don’t mess with mr wrath of math
hectic vid big fella helped my achieve a 99% on my maths test props to you
haha my top g fax my little willy
Hi, first i want to say thank you it was really helpful
So i have a question. What if the divison of our sample size is odd or the samle size is odd? Would it be like this:
n=10
1,2,3,4,5,6,7,8,9,10
Are Q1=3 and Q3=8 ?
and
n=7
1,2,3,4,5,6,7
Are Q1=2 and Q3=6 ?
Or Q1=2.5 and Q3=5.5 ?
This was so simple, if only all teachers could teach like this
What if you have for example: 13 numbers, you have a median, exactly but how? You eliminate the median and continue with the other 12 numbers?
Wtf !! Why we take that in medical field .. it's awful 😞 but man you are incredible
This guy teaches so well, my brain's gonna explode from all the knowledge he's shooting out!
That's what I like to hear - glad it helped!
I have a math exam tomorrow and I’m pretty sure this topic will be on the paper since I have no choice but to take higher :’)
I hope the exam went well! Thanks for watching!
Thank youuu, I’m taking keystones in a couple weeks and this is in my practice packet and I forgot how, helped a lot!
Glad it helped, thanks for watching!
I understood in this 3 mins more than what I understood in 2 hours lecture. Thanks a lot!
Glad to hear it! You're welcome and thanks for watching!
yeah this vid was perfect for my engineering university project. shnea shnea gang gang
You teach really well! My teachers to lazy to go over things again so he sets these things for us
Thanks a lot, I am glad it helped!
Beautiful explanation. This helped a lot
Thank you so much! I was having trouble figuring out where I went wrong in my maths exam, it's cause I was finding the difference between the lowest and highest value of the 1st and 3rd quartiles instead of finding the median
Glad to help, thanks for watching!
This is excellent, thank you for breaking this down so that us beginners can make sense of it all !
Glad to help! Thanks for watching and let me know if you have any questions!
This was great. I wish our uni teachers can simplify things like this. I guess they have to make up the time they are being paid for lol
Yes thank you i almost faild to
You're welcome! I am glad it helped!
I came here because I'm taking a test but the teacher didn't teach us this and I still don't get anything
Thanks for watching and I am sorry the lesson didn't help! What step is confusing you? I'd be happy to try to clear it up!
Thank you soo much. This literally made no sense earlier and you kinda saved me
I got a block exam for year 10 today so just brushing up on everything I need to know
Thanks a lot for watching, John, and good luck on the exam (unless you've already taken it, in which case I hope it went well)!
I need an explanation on how he got 6.5 from 6 and 7 and 2 from 1 and 3. If both numbers were 3 or 3,3 would q1 be 1 ? 0?
If two numbers in middle of one side were 6,9 would it be 3?
for 2:20 what if they're equal numbers so you dont have a number between it
Thanks for watching Jenny, and good question! When I say "halfway between" what I am really trying to say is "average". So we want the average of the middle two numbers. To get that, we add them and divide by 2. Like (1+3)/2 = 2 and (6+7)/2 = 6.5. The average is halfway between the two numbers, but talking about it as an average I think is the easiest way to answer your question. So if our lower half of data was 1, 3, 3, 4 for example, the median of this lower half of data (which is Q1) would be the average of the middle two numbers - 3 and 3. The average of 3 and 3 is (3+3)/2 = 3. Long story short, if the two numbers in the middle are the same, then that number is the median.
As a side note, I'll point out this situation is still "halfway between". So for example, what does it mean to be halfway between 1 and 3? It means you are as far away from 1 as you are from 3. Such a number is 2, which is 1 from 1 and 1 from 3. So what is halfway between 3 and 3? Well that would be 3, since it is 0 away from 3 and 0 away from 3.
Watching this 30 mins before my final exams to remind myself of everything
Thanks for watching - I hope your finals went well!
@@WrathofMath haven’t gotten my grade yet but I feel like I did good
This video saved my skin, i recommended it to my friends and they're were thankful but honestly, the one who was supposed to be thanked was you sir... So thank you so much🙏
What if your data points are bigger numbers for example 2996368, 3846738….
my teacher was like 3(n+1) divided by 4
and (n+1)divided by for and then do some messed up way of counting to get the answer
Wat easier than other people trying to make a 1. Hour video explaining something so confusing it makes my brain hurts. You now have 1 more sub and like and I hit the noti thank you so much
Im a little confused, what if when trying to find the median, the numbers are un-even, for example you have 15 numbers, what do we do then?
You’re a life saver I hope you make more videos like this for statistics
Glad to help! Thanks for watching. I have more stats videos planned but they are not at the top of my list right now. If you have a specific topic you'd like to see covered let me know and I'd be happy to do a video on it!
I'm in 5th grade and I'm so confused lol-
Sorry if this video didn't help! Do you have any questions I can help clear up?
My teacher teaches this in 40 mins I couldn’t understand anything, this is 3 mins long and I understood everything😭
Thxxxx, I’m going to rock my class later
You're welcome and thanks for watching! I hope class went well!
WTF??? You can do that to find the Quartiles easily?????? Our teacher teached us to use a Equation.
(K × N) ÷ 4, where K is the Quartile(i.e Q1 would be 1) and N as the total amount of data you have.
There are a few ways to find quartiles, and they won't always give the same result, the idea is for large N values (for which we'd actually do an analysis) the differences are small. Also, the formula you were given is easily programmed into a computer, whereas the way I show in this video is a purely by hand description. Thanks for watching!
I understand but the question I have it’s between 159 and 180 what do I do if that happens?
Has anyone learning this for data science
Like please need to know i am only one looking back into basics or its normal
Perfectly easy to understand, thank you! 👍
Glad to hear it! You're welcome and thanks for watching!
Thanks a lot! I understood it really quickly.
Glad it helped! Thanks for watching!