How to Find Quartiles and Inter-Quartile Range from Raw Data

[@gabrielnestrada6640]

Thanks for sharing, j
Just so you know. the IQR in the second example is 4.5 not 3.5. (7.5 - 3 )= 4.5
thank you.

[@p.chandra2444]

A wonderful explanation, I have got a crystal clear idea about the quartile and quartile range. Though there is a simple mistake which is 7.5-3 = 4.5, it should not bother anyone.

[@kiranyeluru7392]

Wow Anil sir excellent details sir

[@Narsimha_thapa_official]

Very easily understandable 👌
Good teaching

[@devasree5766]

How can average of 3rd and 4th observation become 3.25th position? If it is 3.5th position, it is ok. The correct formula is
3rd value +0.25*(4th value- third value)? Please reply sir

[@vic902]

thank u so much. My teacher could not teach this in an entire lesson.

[@ndlovukazi135]

Best explanation. I love the 0.5, 0.25 and 0.75 they make it so easy to understand. Thank you so much

[@MathematicsTutor]

Thanks for appreciation

[@rajendramisir3530]

Excellent explanation Anil ji! Inter-quartile range represents the central half of this ungrouped data set.

[@MANPREETKAUR-rl3ie]

thanku you so much sir for this incredible explanation

[@niharikamiryalavk]

Nice explanation

[@aishahassan7588]

Sir may god bless you

[@MathematicsTutor]

Thanks a lot

[@komalpayari8111]

Thank you sir ji 🤠

[@MathematicsTutor]

Playlist for you: ua-cam.com/video/wcuDtKN3ZAQ/v-deo.html
Thanks

[@ClickyKitsune]

14:39 if you are only looking for IQR.... cheers

[@MathematicsTutor]

CORRECTION: IQR for Ex2 will be 7.5 - 3 = 4.5.

[@indiraanandjit1172]

Excellent... Anil you have made this so easy!

[@CommonLyphe84]

Very helpful thank you was doing Biostats and i missed that lecture and tutorials so was logging behind but just one watch and i got it it....clear, simple and easy to understand

[@MathematicsTutor]

Thanks and All the Best!

[@netanjabrink4972]

Thank you so much for this video. Saved me a lot of frustration. Excellently presented.

[@SpuckyBMusic]

You just saved a soul here👏

[@e-glance3655]

Very informative, Thnx very much Mr. Anil Kumar ...

[@johngelmarckbustillo4413]

Thankyou for this. You really saved me 😥

[@ajieaugustine9458]

Wow really lovely this lessons has really taught me a lot

[@marthatolkeins8201]

Thank you, thank you, thank you.... Despite the errors it was really helpful with my assignments and this simple methods i will bury them in my brain forever.

[@MathematicsTutor]

Great!
Thanks

[@rahamatullah8005]

It's very easy to understand. Thanks for your video. It worked for me well.

[@priyathamsamuel]

Thank you🙏

[@mwanikimurage3355]

Second example, inter quartile range 7.5-3=4.5 not 3.5. Otherwise very helpful method especially the idea of using 0.25 ,0.5 and 0.75

[@wandipebenny5597]

Thank you so much for well explanation I fully understand the lesson 🙏🏿❤

[@larbiemmanuelayisi4995]

Thanks and God bless you for such a great work.. Keep it up

[@MathematicsTutor]

Thanks a lot for appreciation. All the Best!

[@yanira7444]

Excellent explanation! Thank you 😊

[@nasimfatima3187]

Oh thank u so much with tear eyes... Its help me so much

[@jerryaguylovlog9876]

4.5 the iqr of the second example thank you

[@johnpiol1911]

clearly understood and thanks you Sir.

[@harshadrathod7875]

Nice video for the students
Nice communication

[@MathematicsTutor]

Thanks for appreciation.

[@dumplingzzzmastezz5201]

your the best teacher ever

[@GeoKimem1219]

thank you Anil Kumar. The video is clear and understandable. But for the second example, IQR is 4.5 (7.5 - 3) not 3.

[@MathematicsTutor]

Thanks for the correction. IQR for Ex2 will be 7.5 - 3 = 4.5.
Thanks for your time and feedback

[@xboy_active_legion]

Good explanation. Thank you. BTW the answer for the Example 2 is 4.5, however this is not important.

[@mehedimithu374]

Thank you. That was very helpful.

[@ebrimabah1052]

Thank you very much for that wonderful explanation, it is common sense we are all human.

[@MathematicsTutor]

Thanks for encouragement!

[@ebrimabah1052]

@@MathematicsTutor Really you are great. I spend almost 2 hours listening to lectures on this yesterday, I didn't even have a glimpse of what the lecturer was saying, but just 10 minutes of your explanation here I am alright. Once again thank you

[@MathematicsTutor]

@@ebrimabah1052 WOW. Thanks a lot. You may like to look into one of the related Playlist: ua-cam.com/play/PLJ-ma5dJyAqprvhO3Ki6LrW7kR1U-s1pL.html
All the Best!

[@fatimamuibi4271]

@@MathematicsTutor it really helped

[@EnvironCyclist]

thank you sir..

[@k_chetan_gupta]

nice explanation and easy to understand

[@3607458]

thank you sir for the help..

[@rebekah3483]

Great way of explaining this! Thanks!

[@bakheetasalmansoori]

very clear, thank you so much

[@keithedwards2841]

Well explained

[@AbdurRahman-pz9kk]

Nice...

[@haifaghohal9553]

Thanks for this explanation

[@HungTran-mn2nf]

Thank you so much. The video was very helpful !

[@MathematicsTutor]

My Pleasure. Thanks for appreciation.

[@puritypaul-yx3tc]

Thanks 👍

[@biniyayusif9986]

In example 2,4 was appear 2times but you put only one and use 8 which appear in only one place but you put it twice

[@BlueSkyGoldSun]

Saved my life thank you

[@mohammadmahmudulhasan6832]

Thanks Sir ❤

[@nirmeenh7022]

thank you , it is very helpful

[@MathematicsTutor]

Related video: ua-cam.com/video/-VT19GWnduc/v-deo.html
Thanks

[@XxMachuRicuxX]

Awesome thanks

[@meghasrisrimal4713]

Thank you 😊. It was really helpful ..

[@tonycl568]

Thank you. Now I understand :)

[@meatpie456]

Thank you very much Anil! You saved my life for my statistics exam :)

[@marianaspognardi8638]

understood

[@pujathacker3879]

In the second example, IQR would be 4.5 instead of 3.5.

[@labonipaul1917]

thnk u

[@zdkfz1]

it is wrong: in example number two, Q1 and Q3 are not correct, since it is not the middel point. The position is 3.25 and not 3.5, same for the position of Q3: 9.75 and not 9.5. Therefore the value is not in the middle between the two points.

[@MathematicsTutor]

Thanks

[@ivanho2438]

No, Mr Kumar is correct

[@SaramZafar]

God bless you!

[@_chade]

Thank you sooo much!!

[@samsulhoque888]

good

[@alagiesambou4271]

THANKS so much sir please i will to know which other area do you teach i am an economics major in the university of the Gambia so that i can be following you on youtube

[@ghadah9756]

Thank you so much this is so helpful!

[@Kylaknowws]

Thank you!

[@Homeopath_canada]

nic

[@ritizranjan9127]

Very nice broad minded teaches

[@MathematicsTutor]

Thanks for appreciation.

[@glorysunday7077]

The second IQR is 4.5

[@mohamedosamakhan3140]

Q3-Q1 = 7.5-3= 4.5

[@MathematicsTutor]

True

[@thaichinlee4321]

i have an enquiry. Let say, i have 10 numbers,
1,2,3,4,5,6,7,8,9,10. How do i get the Q1 and Q3?

[@adityapandey1569]

IQR for second problem should be 4.5

[@keithedwards2841]

Can u do an example when u have grouped data?

[@MathematicsTutor]

Here is an example for you Quartiles with Group Data: ua-cam.com/video/egGyi9QJCQ4/v-deo.html

[@bradleyr4451]

Very nicely done! I saw another video where if the set of numbers is even you would find the median, then just "add in" that number to the set of numbers, then you can find the 1Q and 3Q as if its odd? But youre saying no, if you apply the formula as q1 = .25 x N +1 and N + 1 is odd? then you take where that lands and average out those 2 numbers. This is a totally different number. Another teacher was teaching that way of finding q1 and q3. That would mean in Example 2, the median is at between the 5 and 6 or 5.5 but now you add 5.5 to the set so N = 12 becomes N = 13 and q1 is 3 but q3 is 7 (not 7.5). Can you speculate on why a teacher would present the way to find q1 and q3 that way? thank you

[@MathematicsTutor]

I prefer to keep things simple and try to explain the way I can understand easily. That always help.
Thanks for your appreciation and keen interest. All the best!

[@PriyankaSharma-yh6sb]

Hello Sir, I am new to this channel. Have you covered all the topics of statistics of 12th level ? where can I find them

[@MathematicsTutor]

You may search different topics by including Anil Kumar playlist in your key words. Try it out and the let me know if that helps. Thanks
Here is one playlist: ua-cam.com/play/PLJ-ma5dJyAqpldIsYj12SbqSpPDfyITE5.html
ua-cam.com/play/PLJ-ma5dJyAqpHrVLEPUD6VV3CHxKlDzhn.html

[@subbareddymeruva]

Hi Anil Kumar Sir,Your explanations is very nice,but I have a doubt about quantiles,when I run the quantile command in R with your data,I got different answer.Here I am posting the answer is
> q4=c(2,3,1,4,6,8,9,10,12,3,4)
> quantile(q4)
0% 25% 50% 75% 100%
1.0 3.0 4.0 8.5 12.0
but in ur example 75% is 9,please clarify my doubt sir,i am very confusing in this.
Thank You Sir.

[@komalpayari8111]

You are not arranging the given data in ascending or descending order
May be
That's why you are not getting the
right answer 😅

[@apilchaudhary3094]

Why (n+1)

[@rahulranjan1967]

I think Q3 in 2nd ex should be 7.75.
Am I wrong?

[@tiffanyloupias-young2748]

do you always use (N=1)Q1

[@Andre98gv]

Where did you get 1 fourth from?

[@nabilashah8853]

Tnx sir .but second example not understand. Sir

[@MathematicsTutor]

There is correction in Example 2: CORRECTION: IQR for Ex2 will be 7.5 - 3 = 4.5.
That should help. Thanks

[@pushupmaths3465]

Thankyou...but you can't say .25 will give you the average of two number...... 0.5 gives you the average of two numbers..
Kindly make the changes sir coz ur answer is wrong ( According to Linear Interpolation method)

[@nirvanaamjad3573]

Play on x1.75 speed and thank me later :)

[@re_di_roma_is_back2388]

It's wrong. It's not the simple average between two consecutive, order numbers but a weighted arithmetic mean.

[@jacobmatura5571]

thank you for the lecture but how comes 7.5-3=3.5.....no way

[@MathematicsTutor]

IQR is 4.5 as written in the comments. Thanks

[@gosalynalvaro9264]

7.5-3=3.5?
Maybe it's 4.5

[@MathematicsTutor]

Thanks. That is a correction which is required to be done.
Appreciate your feedback.

[@user-zi4nq4re9n]

Note:the biggest and the smallest value doesn't count ever

[@bread0812]

I be Savvy

[@selfmailgrao7907]

sir 7.5 - 3 = 4.5 not 3.5 sorry to say; but supereb explaination

[@MathematicsTutor]

True, that is correct.
Thanks

[@usmansiddiqui7821]

1 saal me aik lafz bolrha hai hai

[@tariqalenzi376]

not correct at alllllllllllllll >>>>>>> Q1 = 3 Q2 = 4.5 Q3 = 5.5

[@MathematicsTutor]

True, the correction in calculations has been already included in my comments. Normally, that part is overlooked.
Thanks

[@joeldaganio8567]

IQR for example 2 is wrong. It should be 7.5-3=4.5

[@MathematicsTutor]

Thanks. You are correct. I have incorporated that as comments. Thanks for the feedback.

[@petergeorge1690]

reeeeeeeeeeee

[@zeeshankhanyousafzaivlogs91]

This video wasn't so useful

[@harshadrathod7875]

Nice video for the students
Nice communication