How To Find The Interquartile Range & any Outliers - Descriptive Statistics

Подписаться 8 млн

Просмотров 605 тыс.

50% 1

This descriptive statistics video tutorial explains how to find the interquartile range and any potential outliers in the data. You need to calculate the first and third quartiles in order to calculate the IQR. Q1 is the median of the lower half of the data and Q3 is the median of the upper half of the data.
Statistics Formula Sheet:
bit.ly/47zjTVT
Introduction to Statistics:
• Introduction to Statis...
Arithmetic, Geometric, & Harmonic Mean:
• Arithmetic Mean, Geome...
Simple Frequency Tables:
• How To Make a Simple F...
Relative Frequency Distribution Table:
• How To Make a Relative...
Cumulative Relative Frequency Table:
• How To Make a Cumulati...
_________________________________
Dot Plots and Frequency Tables:
• Dot Plots and Frequenc...
Stem and Leaf Plots:
• Stem and Leaf Plots
Side By Side Stem and Leaf Plots:
• Side by Side Stem and ...
Histograms:
• How To Make a Histogra...
How To Make a Frequency Polygon:
• How To Make a Frequenc...
__________________________________
Quartiles, Deciles, & Percentiles:
• Quartiles, Deciles, & ...
Interquartile Range & Outliers:
• How To Find The Interq...
Skewness & Symmetric Distribution:
• Skewness - Right, Left...
Sample Mean and Population Mean:
• Sample Mean and Popula...
Mean, Median, & Mode - Grouped Data:
• Mean, Median, and Mode...
____________________________________
Final Exams and Video Playlists:
www.video-tuto...

Опубликовано:

1 окт 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 272

@TheOrganicChemistryTutor Год назад

Statistics Formula Sheet: bit.ly/47zjTVT Final Exams and Video Playlists: www.video-tutor.net/ Next Video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-U0NZu6f5TMI.html

@danielleshepherd9200 4 года назад

You deserve my tuition honestly.

@emhkayho 2 года назад

😭😂

@NY-ci1tj 2 года назад

🤣🤣🤣🤣🤣🤣🤣🤣🤣😭😭😭😭😭

@shrinking.violettt 2 года назад

😂😂

@mariamacruz107 2 года назад

You’re not lying 😂 he’s better than my professor

@ceidelinaperez7052 2 года назад

😂😂😂

@jlawrenceKolaker_20 Год назад

Stop reading my comment. Focus on that tutor. You have an exam tomorrow.

@yackolegend6894 5 месяцев назад

😮😮😮😮😮you got me pro i got and exam tomorrow

@stepannikitin3898 5 месяцев назад

Today*

@koru6129 5 месяцев назад

@@stepannikitin3898same

@thatwasiankid8151 5 месяцев назад

@@stepannikitin3898IB Maths finals Hahahahha?

@skycenat 4 месяца назад

i have an exam in 30 minutes lmao

@kevinverkuil3556 4 года назад

Today is the first day of Covid-19 home school. Your video was super helpful and saved us a lot of stress. Thank you.

@unalive293 4 года назад

what grade are you in?

@jennieblack6731 4 года назад

My first day started last Tuesday

@masonpark1512 3 года назад

@@unalive293 I guess he's in Grade 10.

@skinsoulself4680 3 года назад

@Max Kesselheim lol same

@yesbutnoi2120 3 года назад

@@danielaphilip5749 I learned it in the 6th also I just need to relearn this

@raspberryroses 3 года назад

you're helping me pass chemistry and now statistics, thank you for these videos

@lilyanatekie6045 3 года назад

RIGHT??

@samuelademolaadedoyin8272 5 лет назад

Your teaching is effortless and easy to follow through, good job and thanks for sharing

@CamiloSanchez1979 Год назад

I said it before and I will say it again. You have helped an entire generation through college and school. You deserve the congressional medal of honor

@h3rn14 7 месяцев назад

Great video but if you say "Outleer" again I will scream

@franfran6152 4 года назад

Sounds like maybe he taught himself directly from a book (never heard the word spoken). If so that's amazing and this guy is even more of a genius than I thought!

@___GFY___ 4 года назад

not to take anything away from him, he's great at teaching and i'm sure is great at math. but this concept is simple and you could easily teach yourself.

@kopicat9656 4 года назад

@Future Society Of Gentlemen *"Yeah, this is big brain time."*

@mariamacruz107 2 года назад

@@___GFY___ it’s not easy for everyone, if I never watched this video I still wouldn’t understand the concept.

@LeAnnASMR_ 4 года назад

omg i was here last semester occasionally for chem and NOW stats?! wow u are a genius 🤩

@etherealvox2010 3 года назад

Whenever I'm on youtube looking for answers on various topics and the search returns one of your videos, I literally feel my brain dancing with joy .

@horvathgergely452 Год назад

gotta love those outleers. Otherwise great explanation, thank you!

@lilmomin8253 2 года назад

straight to point explanation , saved me hours of time waste thanks sir. i have my exam in 12 hours and i am saved hopefully.

@iwillgowiththatcat8667 7 месяцев назад

Update did you pass the exam? I pray that you did

@lincolnpierce7895 3 года назад

My teacher asked for the interquartile range on a test when we never even talked about it in class, so now i'm here. Thanks for getting the stress off of my back.

@NoName-fc5wc 3 года назад

online class is helpful if you record screen on zoom

@mastoora3491 4 года назад

I love his explanations. He explains everything clearly 😊 thank you so much 🙏

@diymusic437 3 года назад

This video was so helpful! Your explanation was extremely clear and short. You explained even better than my teacher! Thank you so much for doing these types of videos.

@michycuisine4382 5 лет назад

I love your teaching. Keep it up

@hirunamahesh9170 5 лет назад

best teacher for stat.thank you sir

@michaeltheisen 2 года назад

There's just no way. After all these years. No matter the class. My questions ALWAYS lead to one of your videos!

@ishmamabrar1897 2 года назад

I have no words to describe how thankful am I to you… I have exam tomorrow and this legit helped me out…

@IsJdog911 4 года назад

Man you explain this ten times better than my lecturer, there might be hope for me just yet thanks

@fortnitegodness1949 4 года назад

Thank you so much! This allowed me to grasp it so easily!

@darkhighwayman1757 7 месяцев назад

when in doubt...I always come back to the OCT.

@labinatasfia624 4 года назад

I realised it was outlier and not outliner after he pronounced the word. No wonder I have random spelling mistakes all the time 😐

@krumfy7201 3 года назад

brah I just play krunker.io in class and then watch this is better than my teacher

@NicatNsirli-gy2wl 5 месяцев назад

you explained it wrongly in the second part of the video

@mcrow312166 4 года назад

Some very clear examples of calculating Lower and Upper Quartiles. The Quartile calculation is one of the most confusing and ambiguous in mathematics. There is more than one formula used for calculating Q1 and Q3 and they give slightly different answers.

@annamariastavropoulou8002 Год назад

what if Q1=4 and Q3=16 min=-3 and max=22 also IQR IS 14 lower fence i get 17 and upper fence i get 5 IS THIS NORMAL? lower fence to be bigger than the upper fence? also these are the following data points--> -3,-1,3,5,6,8,9,12,14,15,16,16,20,22

@veerakanneboina8086 7 месяцев назад

I have followed the same method in an exam, but my answers was wrong. When I go through some research I found some formula like Q1=(n+1)/4 th term, Q2=(n+1)/4 the term, Q3=3/4*(n+1) th term. In this case the answers were different. When I started calculating using this formulas, for above 2 example in this video for Q1 i got Q1=3.25 th term. 3.25 th term means do i have to take average of 3rd and 4th terms or do i have to do interpolation. Which method is right?

@coltonklein 3 года назад

One day the whole world will be taught by you.

@AJoehimself Год назад

Messi>Ronaldo

@shadowlite2569 Год назад

Messiuu

@shadowlite2569 Год назад

Aduh karim

@shadowlite2569 Год назад

Fans abdul

@almoserty Год назад

Jojo kontil

@deeznutsguy551 Год назад

jojo bau

@sashamelike5474 3 года назад

I hate math and stress about it the whole time I do it to the point I want to cry

@tvvt005 Год назад

How come IQR represents 50% values? Isn’t simple subtraction not a reliable measure of dispersion? I’m confused brooo My teacher said that SIQR rep 50%

@ategunbabatunde148 11 месяцев назад

Genius. Absolutely genius👏👏. You are really helping

@tebogomatjekane4089 4 года назад

Do you have a channel of grouped data quartiles?

@LoukaPapineau Год назад

He basically thought me my whole Stats for engineers class. My teacher is horrible. He shows is how to enter formulas in the R software but doesn't show us how to do it ny hand and then makes us do it by hand on the midterms and my final exam tomorrow 💀

@sethus8677 Год назад

Why we took 1.5 IQR? IS THERE ANY REASON BEHIND IT.PLEASE EXPLAIN ME.WHY CANT BE OTHER NUMBERS?

@alisiraydemir 2 года назад

I passed my Physics 101 and Chemistry 101 courses thanks to you. Now I am learning data science, and I need to understand how statistical applications work here I am again. Thank you!

@christinelawing5183 3 года назад

Where did you get the Q-1.5?

@Nora-ks2sq 4 года назад

This guys VOICE is so soothing

@jamstrr 4 года назад

What a great help. Thanks!

@ericdaley6416 Год назад

You are an excellent teacher and I just want to correct your pronunciation of the word outliers. It sounds like Out liar as in someone who does not tell the truth. YOU are a great teacher.

@Victor-tl4dk 3 года назад

Thanks for the video. What are outleers though?

@王永基 2 года назад

That's a very helpful video for me! Thank you, teacher!

@rachelmnyika6279 Год назад

Nice explanation.....why are you multiplying by 1.5 when finding outlier?

@ΠετροςΝικου-β5δ 2 года назад

Skip javelin outliers outside out of [q1-iqr*1,5,q3+iqr*1,5]mode is the most occuring value screw up overdue Quartile each of four equal groups into which population of results can be devided hodgepodge interquartile range q3-q1 percentile

@eliasbadawi3669 2 года назад

anyone else also here cause you have a test tomorrow and your last minute studying before cause you have no clue what this is...

@TheMaro57 Год назад

anytime I see a black and colorful screen I know this is where I will learn how to do something...

@halloheimur 8 месяцев назад

I'm so thankful I wont even comment on how strangely you pronounce "outliers" :p

@LilyGraceySa Месяц назад

I think you've helped me in every semester of college. Thank You!❤❤

@blesslyhosea884 3 года назад

Thanks to all your videos, especially this one..your explanation is understandable and super helpful..🙂

@dyme917 10 месяцев назад

what if the median are two numbers, I haven't seen tutorial vids with example like that

@jjjt2168 3 года назад

Ive literally been stuck on the the last 2 minutes because how you decided to proceed foward no telling us if you're multiplaying q1 x 1.5 or 1.5 x iqr

@catirerubio 7 месяцев назад

I followed along until asked if 26 is an outlier. After that it is opaque.

@JonathanStarr-l2i 14 дней назад

Where is the 1.5 coming from????!?!?!??!?!?!?!??!?!??!?!?!??!??!?!?! Q, -1.5IQR WTF? why

@naomilouisehayward 3 года назад

Thank you so much for this great tutorial!

@melisameltemozmen8524 10 месяцев назад

I love your channel, it's very helpful but I'm wondering why didn't you talk about inner fences and outer fences?

@timg.3287 Год назад

This helped so much, I was so confused when my teacher explained it 😆thanks for helping me prepare for my precalc final tomorrow 😊

@animeboy8167 Год назад

Thankyou so much love from:🇵🇭🇵🇭🇵🇭🇵🇭

@LeeLee-vu9lf 3 года назад

Its better to give my tuition to you than my school honestly I'm not jk.

@arnoldabrahams7731 Год назад

The last question Q1 should be 14? And Q3 30,5

@randomstuff5115 4 месяца назад

why didn't I know about you during covid :(

@lockhart8858 11 месяцев назад

Watched for my eco statistics class - I actually understood!!! Thanks saving for later

@tristanlisandro2247 3 года назад

I was looking this up and clicked the first one then it said "pay" like does it look like I have money?

@mimianna3993 Год назад

Thank you

@rajanknows 3 года назад

its 11:30 in india 14 march 2021, tommorrow is my biostats exam. thank you sir for this video.

@francinendedi4537 Год назад

It's been more than a year ago today that I've been following your channels and now I can easily understand

@hazhay.2699 10 месяцев назад

Thanks so much .... ur explanation is perfect

@___GFY___ 4 года назад

i'm trying to help my son with finding interquartile range and i understand it of course, but i don't understand the purpose of finding the median of the entire set of numbers first? you don't need it to divide the data into upper and lower halves (either you have an even set of numbers you divide in half, or you have an odd set and you divide in half leaving out the middle number which you know is the median by default). but why purposely deduce the median when trying to find the interquartile range? you don't use that number at all when finding the answer.

@BeatriceWJane 10 месяцев назад

Can you be my teacher? You simplified a lot

@kangwalivian 9 месяцев назад

Thank you so much You’ve been such great help

@rahulsinha224 3 года назад

Thankyou .i was in doubt but after watching your vedio now i have no doubt❤️

@brittanya5478 3 года назад

Have a stats exam in 2 days... I now know this concept after 2 months of online class. :) THANK YOU!!!!!!

@Nour-su5gq 4 месяца назад

What are Q1 and Q3 in this one : ( 13 , 15 , 17 , 19 , 25 )

@rebeccaquansah-vy5tu Год назад

The moment you don't pay attention in statistics class😂

@sunny0773 3 года назад

I've visited your videos since long before I even considered switching majors. I love you. Thank you immensely.

@ErcoleBellucci 10 месяцев назад

Guys do you know what software does he use to take notes?

@HerndonInvests Год назад

Thanks for this. On the outlier bit, why 1.5IQR?

@delansibs 2 года назад

Might as well just drop out and get you to tutor me

@JacobCharles-u2m Месяц назад

the best math I have watched online for years

@엄예지-u3j 2 года назад

I want to make your korean subtitles for free.

@Star23s Год назад

what is n when trying to find upper quartile

@chankinwah1963 4 года назад

Hi, i was just wondering if there is another method of calculating the lower and upper quartiles...which results in a different answers. Please refer to this video...ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2N8ro3fTINY.html If i use that method i will get the lower quartile as 5.75 ...but your method gives 6? Actually i used Excel to calc the same set of data and i also got 5.75 also. I am confused because a lot os statistics text books actually use ur method of computation. But some do use the other. Just wondering which method is correct. Hope u can shed some light into this . Thanks in advance for your help.