Quartiles, Deciles, & Percentiles With Cumulative Relative Frequency

Quartiles, Deciles, & Percentiles With Cumulative Relative Frequency - Data & Statistics

Рет қаралды 1,088,599

Күн бұрын

This data and statistics video tutorial provides a basic introduction into quartiles, deciles, and percentiles. It explains how to find the quartiles of a data set and how to calculate the deciles and percentiles using a cumulative relative frequency table.
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-tutor.net/

Пікірлер: 309

@TheOrganicChemistryTutor Жыл бұрын

Final Exams and Video Playlists: www.video-tutor.net/ Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections Next Video: kzfaq.info/get/bejne/ibqDg5uYubnIhGw.html

@ApexReign 2 жыл бұрын

I love how when we needed to learn something number related and we cant understand anything from the books, teachers, recording, and the web, this is where we all end up

@lifeofmiradc Жыл бұрын

Exactly 🤗

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Same

@benzarperez2173 3 жыл бұрын

@@vincecancino1081 same

@melatchernet5368 3 жыл бұрын

Doing videos and teaching in the class are not the same

@rushiaboingboing6799 3 жыл бұрын

69th like pog

@beyikcykarylano4522 Жыл бұрын

To find Quartiles use this formulas for grouped data Q1 = n/4, Q2 = 2n/4, Q3 = 3n/4, To find Decile use this formulas for grouped data D9 = 9n/10 To find Percentiles P99 = 99n/100 where n is the sum of frequency.

@GoToMan 10 ай бұрын

2n/4 is the same as n/2

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The Organic Chemistry Tutor never disappoints.

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@lindachocolateberthier Жыл бұрын

You are sooooo good at making this simple and easy to understand, with such a humble voice! THANK YOU!!!

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You really save me from time to time. thank you so much for creating videos like this

@tawheedmohammadsayyid390 4 жыл бұрын

Thanks man. Just needed a brush up on this. Helped me!

@maisyunmunia8170 3 жыл бұрын

The video is very helpful. Can u please explain when to take the exact lowest value for the percentile point and what to do when it ties?

@cycy_fam 3 жыл бұрын

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@Yuu-kg5tr 4 жыл бұрын

thank you for the great help! i learned a lot for our reporting!

@tsndiffopera 4 жыл бұрын

Appreciate the lucidity! This cleared my longstanding question of "How to calculate percentiles?" ;)

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@ugochianyima4296 3 жыл бұрын

Thank you so much for this❤️ Your lessons are really helpful

@partypao 2 жыл бұрын

13:50 The 4.25th position between 9 and 11 is not the middle of 9 and 11 (ie 10), but the .25th of it which is 9.5

@gregoryopondi3652 Жыл бұрын

Yes, exactly. So what is Q1 in this case? 9.5 or 10? This is where I'm stuck.

@jayralph7165 Жыл бұрын

what the heck are you saying? it's 10 when you get the midpoint of the two values 9 and 11 by adding them up first and dividing by two you will get 10.. you didn't follow quite well

@mars7540 10 ай бұрын

@@jayralph7165 its not 10, 4.25th postion cannot be 10 since the 4.50th position is 10. For example, 3.76th, 7.23th, 4.97th, you cant just go and add up the 2 numbers and divide by 2 to get your answer. The only time where you can do that is when the position ends in a 50th so like, 3.50th, 4.50th, etc etc. The guy in the video is missing a step called interpolating which requires creating the fractional equation of the differences. Hope people can see through this mistake.

@librawood10107 4 ай бұрын

How do you get the .25 and the .75? To find Q1 and Q3😢

@itspekz3621 4 жыл бұрын

Thank you so much for this. I learn so much. I know I'm so late to comment but I still wanna thank you😊👍🏼. Pls keep up this good content

@BenMousavi 5 жыл бұрын

Thank so much, I watch your video before watching my lecturer's video... GBU

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@tresamufunwa6370 4 жыл бұрын

Thank you sir!!! Was struggling with this

@akali2927 5 жыл бұрын

Day1: learned. Day2: barely rememberd. Day3: totally forgot. Me in school: feels bad man. (._.)

@nathanmcchristie3997 3 жыл бұрын

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@rtsfxwst 2 жыл бұрын

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@gideonofosukyere491 2 жыл бұрын

Very clear explanations. Thank you

@georgesadler7830 6 ай бұрын

Professor Organic Chemistry Tutor, thank you for an incredible introduction to Quartiles, Deciles and Percentiles using a Cumulative Relative Frequency Table. Although I have seen this material before, this is the first time that I have some understanding of how to calculate the deciles and percentiles using a cumulative relative frequency table. A basic course in Statistics would improve by overall understanding of this topic.

@jonathanwiari2275 11 ай бұрын

Thank you so much sir, your explanation is clear than my teacher, since we sped up the lesson without with the better understanding of the topic, now your tutorial help me alot.😊

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@kksal4375 2 жыл бұрын

Great video Sir! Thank you soo much!!!

@tebalelomampa8926 2 жыл бұрын

I'm in university and all this is new to me but this kinda cleared things up for me, thanks for that

@mothusithato4568 2 жыл бұрын

Thank you very much, you are the best. Made stats very easy for me! Thank you, thank you and thank you...

@gwynethsignaben1287 4 жыл бұрын

my teacher said that if ever we are solving for the value of Q1 we should always round up and if Q3 then we should round down.....so confusing :

@user-wv1mg7ue8b 2 жыл бұрын

AMAZING EXPLAINATION , thanks u so much

@a.user9365 4 жыл бұрын

WELL DONE! KEEP GOING!

@ojooyin126 3 жыл бұрын

Thanks so much,well explained

@preciousvernellebonto9271 4 жыл бұрын

hi, do you recommend using interpolation method?

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@r_enaa 2 жыл бұрын

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@DominikStraßer-q9p 13 күн бұрын

Thank you for this great video!

@itzzzjoryinYT 4 ай бұрын

Yay!Thank you very much,I really needed this since I will be competing for a math contest.Wish me luck.

@estherflowers2983 Жыл бұрын

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The video is extremely helpful. Thanks

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Ngl, it kinda blows my mind on how easy you taught this. . . i know it wasn't that hard, but my teacher got a harder solution.

@oliverdelgado8802 3 жыл бұрын

this helped but my teacher did something different but you helped me understand what is what so thanks!

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@hasanrants 4 ай бұрын

thanks for helping me out brother while I take on my Probability and Statistics Course in my Bachelors degree in Computer Science.

@harrysteveaustin8203 2 жыл бұрын

It really helped me. Keep up

@Yang-kr1hp 3 жыл бұрын

How do you interpret the computed value of Quartile, decile, and percentile? pls help.

@subomikashimawo5311 3 жыл бұрын

Thanks this helped a lot

@Gojo_Satoru0611 2 жыл бұрын

Do we need to arrange the set in increasing order if not arranged yet?

@royjustinevirtudazo8825 4 жыл бұрын

I did a trial of finding the midpoint of the 50th and 62.5th percentile (23:13), and the result is the same, it's 56.25. So we can really estimate that 16 (the first 16) is the midpoint of the 50th and 62.5th, which is 56.25 (approximately 56). But yeah it's just an estimation.

@ndilionel 2 жыл бұрын

Much thanks, really appreciate

@Osmankhalid-nm4xo 4 ай бұрын

Maths concepts simplified. Thank you.

@kaleabfissha5616 3 жыл бұрын

thanks very much your apporxazimation is helppp full for examm

@joseph5660 Жыл бұрын

is its compulsory to arrange data in ascending order to calculate quartile, percentile, decile for ungrouped data?

@TheThixa 3 жыл бұрын

Nice explanation :)

@lalohernandez5582 3 жыл бұрын

How are you locating q2 on an even number of N values

@trizhanicolanesaythetruth4984 4 жыл бұрын

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@briannchoe9011 Жыл бұрын

This guy is great 💯

@clydem.seruelocmseruelodes9992 2 жыл бұрын

Thank u. Very helpful.

@eswarboss 5 жыл бұрын

Bit confusion while calculating percentile from cumulative.

@deadly.desai2 10 ай бұрын

Thank you very much.

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how do i get the p93?

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@sachikochannn 3 жыл бұрын

This guy teaches better than my Math Teacher.

@samsonkamau6640 Жыл бұрын

On the quartiles, percentiles and deciles ,when a decimal point occurs, we incorporate linear interpolation Eg in example (16:00) 60th percentile = 60/100 (16+1)th value= 10.2th value= 10th value +0.2(11th value - 10th value) = 10 + 0.2(17 - 16) =10+ 0.2(1) = 10+0.2 =10.2 . This also applies to the rest of the examples with decimal points. We deduct the next number (11th value) to the found value (10th value) and multiply by the decimal point (0.2). 0.2(17-16)

@minigoal4672 11 ай бұрын

I noticed he didn't do this, but my lecturers did.

@bensoncyprian3271 10 ай бұрын

Depending on the level of learning, whichever method is acceptable.

@adityakumarsingh216 10 күн бұрын

@@minigoal4672 Do you have your own lectures?

@phennyzheng5623 4 жыл бұрын

Thx for sharing. Bt wrong answer for q1 and q2. the answer for Q1 and Q3 is not just simply find the median of minimum (or maximum) value and Q2. In you calculation, location of q1 4.25 and q3 12.75 are right, but (9+11)/2=10 is not the right q1. Correct answer should be Q1=4th+(5th-4th)*0.25=9+(11-9)*0.25=9.5. Q3=12th+(13th-12th)*0.75=19+(20-19)*0.75=19.75.

@lorenzotolentino5954 4 жыл бұрын

i noticed it too, i think the answer for 10 is 4.5 not 4.25, (correct me if im wrong)

@abramgaelisabelo6398 3 жыл бұрын

Thanks this clarifies my confusion

@mars7540 10 ай бұрын

Alright people arent catching his mistake here. At 13:50, 10 is not the 4.25th postion since the 4.50th position is 10. For example, 3.76th, 7.23th, 4.97th, you cant just go and add up the 2 numbers and divide by 2 to get your answer. The only time where you can do that is when the position ends in a 50th so like, 3.50th, 4.50th, etc etc. The guy in the video is missing a step called interpolating which requires creating the fractional equation of the differences.

@bahatimusuhuke9829 4 жыл бұрын

Hello, thank you for this video. It is really supportive since it helped us to remember the formula of how to calculate quartiles, deciles, and percentiles. However, I would like to know the value of decimals when you are saying that whole number with some decimal numbers must be calculated using the midpoint between the location of the whole number and the next number to that position. I would like to know the reason why you don't care about the decimals that you got when calculating. for example, when you get 10.3th you could have used 10th + 0.3(11th-10th). I will be happy getting the feedback from you soon.

@elflaco5841 2 жыл бұрын

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@ShaswatManojJha 2 жыл бұрын

SOMEBODY REPLY !!

@markanthonylaranang7486 2 жыл бұрын

on your example which is 10.3th place. get the two whole numbers in terms of place involve (10th and 11th place). use the Higher value (the value of 11th place) subtracted by the Lower Value (the value of the10th place) then multiply the result by the decimal (0.3) then add the lower Value (the value of the 10th place) then you got the 10.3th place.

@davidnemewe9192 4 жыл бұрын

sometimes you make a number to be a datapoint some times you average data up so it is data point little bit confuse

@Busta4Life 2 жыл бұрын

the fact that i understood this quicklier from the video than a 2 hour long session baffles me..

@user-tx5nq4om6l 3 жыл бұрын

Am I doing my Statistics Homework at 4 in the morning? Yes Thank you very much Human Our Prof. Hasn't explained this but classes are suspended but the Work wasn't. tHaNk yOu

@YN-nd2tt 3 жыл бұрын

Same here, but lazy Prof but loads of work