Box and Whisker Plots : Skewness and Outliers. : ExamSolutions

[@ExamSolutions_Maths]

You should always have some form of scale parallel to the box plot, whether it be vertical or horizontal.

[@nurulfathiyah8477]

i think there are some mistakes...if i'm not mistaken Q1 -1.5(IQR) =1.5 and Q3+1.5(IQR)=29.5

[@ExamSolutions_Maths]

I made an annotation for this but it is not that clear

[@freddiemora-nguyen3708]

Are the outliers really 4 and 26.5 because every time I enter it in my calculator I get 1.5 and 19.5. If that is wrong please someone take the time to explain that to me. Thank you!

[@tianyiyin4847]

You are right

[@norah7281]

Thank you! You are God's gift when it comes to Maths revision.

[@dgc312]

Hi, thanks for the uploads! can you confirm whether you made an error when calculating the outliers upper and lower, as i made it out to be lower outlier = Q1 (12) - 1.5 (19-12= 7) so = 1.5 .... upper quartile = Q3 (19) + 1.5 (19-12=7) so = 29.5 Have i done something wrong? please advise :)

[@rachellemarcial3422]

very helpful. Thanks... hopefully I can do this on my test since I understand now

[@ExamSolutions_Maths]

+Rachelle Marcial Good luck

[@WhiteMamba001]

Kickass video!!, had no clue about box plots and it sent me in circles as I have an exam tomorrow but this helps me largely, thank you 😄

[@ExamSolutions_Maths]

Best wishes for tomorrow.

[@ExamSolutions_Maths]

You may well have annotations switched off on the settings on KZbin.

[@fredfredderson3478]

with the correct values for the upper and lower outliers; (29.5 and 1.5) what would the new box and whisker diagram showing the outliers look like? Thank you

[@BallyBoy95]

So that's how you find outliers, I knew it couldn't just be guessing which one looks a bit off, phew! You saved my grade, my teacher just wouldn't tell me of any formula and said use logic for it all...

[@WelshGuitarDude]

Question, what does the left and right skews tell us about data ? Same for if the data is symmetrical ? Also what if the median line is pushed to the right, and the right whisker is also longer ? What if median is pushed right or left but the whiskers are equal in length ? What kind of skews would these be at the point ?

[@DarkendSchoolGirlGua]

Thank you so much, you just taught me this better in 13 minutes and 57 seconds, than my teachers have in 3 hours ;u;'' you are a life-saver, thanks a bunch ^^ TTuTT;; :'D

[@RyanDunton]

learned more from this video than hours in school, thanks

[@ExamSolutions_Maths]

Do you mean vertical or horizontal. If so, yes.

[@ExamSolutions_Maths]

@thewreckedup Thanks - I look forward to that

[@cirina3]

I was studying in your site and i would like to know if the box and whisker plots can be drawn in any part of the graph such as at the top or bottom of the graph.

[@Roadster072]

Thank u soooo much.... This is definitely going to help me in the tests 😁😁😁

[@ExamSolutions_Maths]

Good luck

[@folasade85]

i understood it so perfectly. thanks soooooooo much

[@vionach4602]

Thank you so much! This totally helped.

[@dgc312]

thank you, where do i find these annotations?

[@velpulajhansi3422]

thank you sir for this video..but when I am doing boxplot in spss 26is coming as an outlier....y so?? can you do a video with the same data points in spss...plz sir

[@velpulajhansi3422]

and outliers are 1.5 and 29.5 right

[@shanb8543]

ExamSolutions I love your videos, they have helped me so much. However, I'd like to point out the Upper inner fence, or Second Outlier if you will is also inaccurate. Even if you plugged it in the calculator straight, it's 29.5 not 26.5. I don't think it affected the results, but yeah.

[@ExamSolutions_Maths]

Hi There was an annotation added sometime ago which you may have missed on the video or you are using an IOS device which does not show them.

[@shanb8543]

I saw the annotation for the 1.5, but not the 29.5

[@shainikavindi5995]

Thank you very much sir That is crystal clear 👍👍

[@ExamSolutions_Maths]

Thank you, I am pleased you found it helpful.

[@ramyaumeshbilagi6888]

very good explanation. keep doing such nice videos

[@ExamSolutions_Maths]

Thanks

[@utpalkandel1426]

Thnx u helped alot....

[@katii4084]

That helped a lot, thank you!

[@priscillasventures]

sorry but isn't the value for the second outlier 29.5? really good video thank you

[@ExamSolutions_Maths]

I made an annotation for this but it is not that clear

[@priscillasventures]

ah okay thank you

[@TitoMouhamed]

Thanks alot

[@beastly12817]

so the EXTREME VALUE is the number up/down from the maximum and minimum numbers?

[@ExamSolutions_Maths]

Yes, the outliers are the extreme values if you like which are values below and above the calculated min and max values.

[@olgalochi6583]

yeah i also go 29.5 ¬_¬ and here i thought i was the only one getting this answer

[@ExamSolutions_Maths]

Good luck

[@ExamSolutions_Maths]

Cool, another life saved.

[@ExamSolutions_Maths]

Nope, it was me. I made an annotation for this but it is not that clear.

[@hannah918273645]

WHY IS 30 AN OUTLIER

[@ExamSolutions_Maths]

Look at the box not the whiskers.

[@MrPabloguida]

But it is a very good video!!!

[@brokenoob3797]

its funny how a level is slowly shifting towards gcse content. How ironic

[@Bentami]

Cant you tell I got news for you,

[@slikeyshoes]

incorrect outlier numbers

[@ExamSolutions_Maths]

Please see earlier notes on this. The video has been remade.

[@PhoebeMoon5]

So useful, but your voice makes me sleepy :L

[@brokenoob3797]

lol 11 years ago and this is still helping us. Our teacher randomly came up with the assumption that we should be doing statistics because "maths was just simply too easy". So now 1 month before my exam for stats i have to go through the whole thing, Which im almost completed with it. Anyways this was a banger :P

[@p1p251]

oh my heavens I swear this contributor is a life saver I would reccomend this to anybody who takes pure mathematics as a subject

[@samednakhla]

Great video, but the Upper outlier is 29.5 , and the lower is 1.5 I think

[@ExamSolutions_Maths]

This was remade and a new version is on my website.

[@mandarkastronomonov2962]

Why do I think Jarvis is helping me study Statistics? 🤔 Very good video. It helped me a lot. 👍🏼

[@divinedazzled]

What grade would this be for like what grade do u guys learn it in?

[@mangolovefahrenheit]

Hi,what if the boxes are symmetrical but the whiskers tend to be longer on the right side? Do I say it's positively skewed or symmetrical? Actually, when determining skewness, should we look at the box more or the whiskers? Thanks so much!

[@yasoobtaqvi3719]

mean < median => negative skew mean > median => positive skew

[@bamazudi]

Thanks, box and whisker plots just never went through my head. This should definitely help me with my stats test tomorrow.

[@cirina3]

Yes and thank you sir.

[@bmxfulla8739]

thank you, helped me alot

[@mangolovefahrenheit]

Thanks a lot!

[@sandyashah5625]

Thank you.... very helpful

[@ExamSolutions_Maths]

Sandya Shah You're welcome

[@gamesmaster1060]

Thanks for the vid, how do you know hoe long vetically the lines have to be

[@mohitgulati7321]

+Jack Kelsey : There is no limit for the length of vertical lines. You can make them as big as you want.

[@gamesmaster1060]

Oh thanks

[@mohitgulati7321]

+Jack Kelsey :Are you studying statistics? If you need any help on statistics. just let me know, as i am a statistics tutor, and teach statistics. That is completely free of cost.

[@SirDeatheat]

The median is calculated by find the middle value. In this case there are two values in the middle, 15 and 17. The median = (15 + 17) / 2 = 16. not 15...