Well explained but this is simpler: Step 1: Order the data set from ascending to descending Step 2: Find the middle of the data (basically half the data) Step 3: Then find the middle of the each half of the data The middle value of data on the LEFT from the half you did is LOWER QUARTILE The middle value of data on the RIGHT from the half you did is UPPER QUARTILE Step 4: State the median odd number use (n + 1) / 2 (n representing as the number of values in the data) even number use n/2 + 1 (n representing as the number of values in the data) Step 5: Calculate the range (if the question ask for range) Range = Largest value - Smallest value Step 6: Calculate the interquartile range (IQR) (if the question ask for interquartile range) IQR = upper quartile - lower quartile
@nobodyshere93312 жыл бұрын
Thanks so much for this!- I didn’t understand anything about quartiles and you explained it perfectly. Thank you!
@redeyereeceybbbb81072 жыл бұрын
That was painful to watch u put the numbers in order at the start
@detectivenora2 жыл бұрын
People make mistakes all the time its normal
@fatufatu Жыл бұрын
It's because he's American
@JOHN-CONNOR3000 Жыл бұрын
I agree.
@mollyschramm5322 Жыл бұрын
This comment made me laugh out loud
@malikanderson2837 Жыл бұрын
Fr
@paulrubaire20642 жыл бұрын
Bruhh how many mistakes did you make😭😭😭
@mariam-mk6hb2 жыл бұрын
SERIOUSLY, THANK YOU SO MUCH, I NEEDED THIS! VERY QUICK TO LEARN. THANK YOUUU, MUCH APPRECIATED
@tole3590 Жыл бұрын
thank you christian u a real one my g
@meaarts4972 Жыл бұрын
Thanks man
@GtarWizard Жыл бұрын
Dude you taught me how to do this faster than my teacher could at school! Thankyou!
@footballfanfromuae6877 Жыл бұрын
I didn’t understand anything about quartiles and you explained it perfectly. Thank you
@FUTBALLREELS8 ай бұрын
You just earned a new sub❤
@airprovider8422 жыл бұрын
Thank you so much. This will help in my test.
@tsholofelonaane21182 жыл бұрын
Very simple easy to use
@mannykhan7752Ай бұрын
Wow great lesson, so perfectly executed. One for the books (literally).
@DanielSuley4 ай бұрын
Thank you this helped me so much
@professor16253 Жыл бұрын
thank you, sir.
@lukegoh6905 Жыл бұрын
thats a nice ass pen
@handsomemehdi34452 жыл бұрын
I have read about quartiles but none of them were as efficient as this video. Thank you !
@ruthagnihotri20632 жыл бұрын
Thankyou so much. Literally, you explained it so perfectly
@professor16253 Жыл бұрын
you gained one subscriber.
@-zacm-4925 Жыл бұрын
Thanks so much
@gabrielrajufontanillamangh6350 Жыл бұрын
Thank u so much
@christianandersen5004 Жыл бұрын
No problem, Glad I could help!
@mrtechsavvy88352 жыл бұрын
what if there is a list of 500 values ? would you count it manually ? formula for median : (n+1)/2 if n is odd, (n/2 + (n+2)/2)/2 if n is even. Formula for quartiles : 1st quartile : 25/100*n , 2nd quartile : 50/100*n, 3rd quartile : 75/100*n where n is the number of values in the given list. in this question n is 13 for all these formulas because there are 13 values in the given question.
@rahmamostafa659 Жыл бұрын
Thank you !
@user-fg8vg7cr5f3 ай бұрын
Ty well explained even though you done a couple of mistakes 😅🤝
@user-hc8fu9wp6f5 ай бұрын
Perfect explainer
@king_jules1677 Жыл бұрын
Thank you 😊
@nkanelomhlongo488 Жыл бұрын
Thank you so much ❤️
@koru_halo6886 Жыл бұрын
I love you, man! Im Russian, but ur explaination is so easy to get it) sorry for mistakes
@Kegyetleneper Жыл бұрын
Thanks Christian. It's easy, but I didn't pay attention in class, so I got lost.
@Varunbhalla999 Жыл бұрын
thank you sir i learned this for the first time
@christianandersen5004 Жыл бұрын
That’s Great!
@mujeeb642 Жыл бұрын
Good Explanation👍
@pravinsubba56842 жыл бұрын
Legend you are Sir. Hats off........
@Quit174632 жыл бұрын
Yessss This helped a lot!!! Thanks so much!!!
@beyancabee644111 ай бұрын
Thank you
@sahajgupta25 Жыл бұрын
thank you sir your video was really helpful
@arascho Жыл бұрын
Good job boy
@worthlesschild4052 Жыл бұрын
I was absent when my class took this and I just found out I gave a quis in it tomorrow
@VilexerCreators Жыл бұрын
Kindly provide derivation of lower and upper quartile for n=even
@patrickrafalo9162 жыл бұрын
thank you so much i really needed this
@000R Жыл бұрын
so helpful
@christianandersen5004 Жыл бұрын
I'm glad I could help!
@wasabi_playz94922 жыл бұрын
Thx
@ashensuvinda25263 жыл бұрын
Thank you so much💗
@architasingh1965 Жыл бұрын
Thank you so much for this, it was so helpful!!
@christianandersen5004 Жыл бұрын
You're so welcome!
@karohameacheer35013 жыл бұрын
so helpful, thank you!!
@mr.tatsoya494710 ай бұрын
Thank youu!!!
@lachlanbrown20643 жыл бұрын
yo this helped so much thanks
@taylorb3302 жыл бұрын
Thankyou so much!
@AyeshaKhalid-dp7ue4 ай бұрын
questions. Find the Median and Quartiles and 8 and 9 Deciles the following frequency distribution (10) Class 50-54 457 45-49 490 40-44 525 35-39 30-34 520 508 405 60-64 166 55-59 416 25-29 frequency 20-24 222 interval
@sityanaendale1889Күн бұрын
I Restarted 6 times because he kept forgetting ;-;
@aquadistant Жыл бұрын
thank you so much, you perfectly explain in 4 mins what my teacher can't explain in 30 mins
@christianandersen5004 Жыл бұрын
Thanks for the kind words, glad I could help!
@alpanda810 ай бұрын
amazing explanation!!
@bezze101 Жыл бұрын
Cheers mate
@tidimalomallow75042 жыл бұрын
Thank you so much... this video was so helpful ❤️
@mohammedzainkhazi76672 жыл бұрын
You solved like me Lol with a confusion while sorting
@Conclaps3 ай бұрын
Okay but what happens when you have 1,3,4,7,8,12,16 Because then the median is 7 but what are the ranges because there are 3 numbers not four or six
@thomaskelly4855 Жыл бұрын
Dude thank you I’ve spent the last day stressed trying to figure this out for a colledge class bless you
@starsailor7512 жыл бұрын
this is like me! i also make alot of mistake when arranging the numbers in order 😅
@NashiruHamtaki2 жыл бұрын
Thanks this really helped
@valdemariliev71712 жыл бұрын
Thank you so much, that just helped me to understand how to work with the "QUARTILE" function in Excel.
@selwynjohncredo7732 жыл бұрын
This is the simpliest method to solvr
@heartlyintruder2 жыл бұрын
Thanks sir watching you from india 🙂✨🙂✨🙂✨✨✨
@krishhmurjani2 жыл бұрын
this video helped an indian lol
@ieatlittlebabiesforlunch Жыл бұрын
this is he most confusing explanation of quartiles but everyone sayd it helpd thm so maybe im just dumb
@revnirgaming79262 жыл бұрын
thx bro very helpful
@tsholofelonaane21182 жыл бұрын
Not complicated especially if you are writing a paper tomorrow
@dfsafasdafsfdsfa59692 жыл бұрын
Specify the goal and need money
@fardowsaguled3732 Жыл бұрын
easy
@BereketBirahanu-er6fm9 ай бұрын
❤❤
@suxrobsuxrob201111 ай бұрын
I guess you did a wrong because the median is the 7 th. It is 22 but you choose 6 in your order
@rebeccabecky46192 жыл бұрын
Hi teacher I would like to know the result of this sample : 10, 12,16,17,20. I know 16 is the median but Q1 and Q3 I’m getting confused. Please can you help me. Thank you.
@dataandcolours62842 жыл бұрын
Hi. This video shows the "schoolbook" way of finding the quartiles. It's the easiest way. Unfortunately it's a silly way to do it though as you get an inconsistent behaviour depending on whether the number of data points are an odd or even number. There are actually about 5 different ways to calculate it, which gives sometimes different answers. In his example programs like R returns Q1=1, Q3=17 for very good reasons. It's not 19.5! R finds the quartiles in the following, completely logical way. Let the number of data you have be n+1 indexed [0,1,2,..,n-1,n]. Q1 are found in index n/4, Q2/Median are found in n/2 and Q3 is found at index 3n/4. Often you will have to interpolate since the ratios can end with 0.25 , 0.5 and 0.75. In his example sample size is 13 hence n+1=13 => n=12. So the indexes for the quartiles are actually whole numbers (they will always be if the sample size can be written as 4k+1 where k is an integer), hence indexes 3,6,9 starting couting the first index as 0, hence Q1=1, Q2=6, Q3=17. Your example will simply give Q1=12, Median=16, Q3=17. Don't let this schoolbook approach of doing it in this video confuse you. We do not want to find them in that way in reality.
@dataandcolours62842 жыл бұрын
@Tahsin Yasmin According to the "schoolbook method" yes. But that method is not logical whatsoever. Consider a linear array [1,2,3,...,n]. Note how Q1 and Q3 will not grow linear as you increase n. Q1 will oscillate between not changing at all and changing by a half every second time. Q3 will oscillate between changing a half and changing a whole every second time. A clearly unwanted behaviour, which is why actual non-educational programs and software don't use this schoolbook method. Q1 and Q3 for for the data [10,12,16,17,20] is simply 12 and 17 actually.
@shanzasalam26304 ай бұрын
I think upper quartile is 17
@fatuuhussein36172 жыл бұрын
22+11= 33
@SheenaManalo2 жыл бұрын
💕
@ngareruengombe91783 жыл бұрын
💪🏽💪🏽💪🏽💪🏽💪🏽💪🏽💪🏽💪🏽💪🏽
@jayalonzo2353 жыл бұрын
Salamat po
@AyeshaKhalid-dp7ue4 ай бұрын
Solve it
@omarrahmankhan85632 жыл бұрын
ur tapped
@user-hj6tt7jf8w Жыл бұрын
Bro just re record your video if u get it wrong it would be so much better