Introduction to residuals and least squares regression

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  • Опубліковано 22 гру 2024

КОМЕНТАРІ • 111

  • @jollycolours
    @jollycolours 3 роки тому +294

    in less than 8 mins, you taught me what my teacher couldn't in a whole semester. Thank you sooooo much, sensei!

  • @StickyBrickit
    @StickyBrickit Рік тому +38

    Even though these videos are getting fairly old now I still think they are amongst some of the best on the Internet!

    • @nicholascunningham6936
      @nicholascunningham6936 9 місяців тому +5

      Eh, old or not, math is math. It's not changing any time soon. And I agree, these videos are a godsend

    • @watching4410
      @watching4410 7 днів тому

      What playlist does it belong to?

  • @torinstudios9768
    @torinstudios9768 7 років тому +77

    Ive been struggling with this for my exam tomorrow and this really helped me understand it better- thanks man

  • @jawdee9395
    @jawdee9395 Рік тому +1

    As a freshie in HS I’m watching this right before midterms and BOY HAS THIS HELPED ME A BIT

  • @acinomknip
    @acinomknip 5 років тому +12

    seriously I have been following every single video of yours. such great help. so much easier to understand than the lectures and so much fun!!

  • @chvrleshd
    @chvrleshd 5 років тому +1

    iv'e been searching everywhere and watching videos for an unambiguous explanation of OLS. Finally someone explains properly

  • @shashikantdwivedi5792
    @shashikantdwivedi5792 6 років тому +12

    This helped me understanding linear regression as I am studying machine learning

  • @Josephus_vanDenElzen
    @Josephus_vanDenElzen 5 років тому +12

    7:10 The higher the absolute deviation from the line, the heavier the weight, because of squaring

  • @frankielabro7935
    @frankielabro7935 7 років тому +93

    Where is the link to the next video? I suggest you put a link to the next video at the end of the clip.

    • @ChrisS-bq4pj
      @ChrisS-bq4pj 6 років тому +15

      You can also find this video on his website. Then you can make some questions too so you learn and understand it even better and it provides you videos in the right order!
      www.khanacademy.org/math/statistics-probability/describing-relationships-quantitative-data/regression-library/v/introduction-to-residuals-and-least-squares-regression

  • @Homes-x8r
    @Homes-x8r 6 років тому +6

    Always find my answers from here thank you

  • @fatimak6440
    @fatimak6440 Рік тому

    khanacademy is the G.O.A.T.

  • @zaidthunder1
    @zaidthunder1 7 років тому +3

    you never cease to surprise.

  • @fekimisbah4085
    @fekimisbah4085 2 місяці тому

    Thankd, it is Simple expression for all levels of students to understand.

  • @B760B
    @B760B 2 роки тому +2

    You taught me what i needed to know in 6 minutes and my math teacher couldnt in 2 months

  • @saraharsalan8367
    @saraharsalan8367 4 роки тому +1

    Thank you, this explanation makes the topic much easier to understand!

  • @adosar7261
    @adosar7261 5 років тому +4

    How do you calculate the slope "m" in a non cartesian coordinate system ? (non ortho-regular system)

    • @sethm3856
      @sethm3856 5 років тому +1

      plug it into excel :P

  • @rezafarin8847
    @rezafarin8847 5 років тому +5

    Hi Sal! What program are you using to make those straight line "masks" (where you orient the line "mask" 1st and then draw over it) I'm not seeing this feature in Smoothdraw...I see drawing straight lines but nothing that lets you lay down the line "mask" and then draw so it only fills in inside the "mask" (e.g. 1:46 of this video)

  • @jayneebayful
    @jayneebayful 6 років тому +2

    thanks I actually have a better understanding now

  • @israrkarim65
    @israrkarim65 7 років тому +10

    Awsome Vedio. Love from Pakistan.

  • @gagandeep1986
    @gagandeep1986 3 роки тому +1

    Thanks for the useful video. What software,platform you are using for writing is it ipad ?

  • @amitabhjayaswal
    @amitabhjayaswal 6 років тому +3

    First, THANKS.
    Second, please resolve 2 issues:
    1. Why is the line named Regression Line. From simple English language, I understand the Regression is the opposite of Progression. There should be some thought behind statisticians choosing this word to-draw-a-line-to represent-data. What's that reason?
    2. For certain reason, I'm supposed to learn the Partial Least Squares Regression. Importantly, I don't have a background in Statistics. I'm finding it difficult to chart a conceptual-rung-of-ladder to achieve that goal. Can you please guide me to a series of URLs to learn PLS starting from basics through appreciating the concept nicely? This is my need and I'd be grateful if you address it.
    Thanks and best regards.

  • @Mahmoud-ys1kt
    @Mahmoud-ys1kt Рік тому

    Always Great Sal , Thanks

  • @홍진성-l9y
    @홍진성-l9y 7 років тому +2

    really thank you for this wonderful video!!

  • @qsfrankfurt9513
    @qsfrankfurt9513 2 роки тому +1

    which software are you using to create all this?

  • @bogdanilie6152
    @bogdanilie6152 3 роки тому

    Better than my university lecturer.

  • @aatikanaim8332
    @aatikanaim8332 3 роки тому

    can you please share the link of the next video? i am not able to find it.

  • @syd5338
    @syd5338 6 років тому +3

    How do you do it when you start with a table of values?

    • @maazqasim1639
      @maazqasim1639 6 років тому +1

      Sydney Adams use the x and y from the table to plot dots on a graph

  • @merakicloudd
    @merakicloudd Рік тому

    Thank you, this was very very helpful

  • @sasivardhanbonthu8159
    @sasivardhanbonthu8159 3 роки тому

    why we are squaring the residuals ?? i case of negative values if we upply mod then it will become positive then what the case with the squares of the residuals

  • @What-goofy
    @What-goofy Місяць тому

    I have an exam in less than 10 minutes thank u 😭😭😭

  • @monsymg7340
    @monsymg7340 7 років тому +1

    Someone answer me but basically observed value minus (-) predicted value?

  • @syedmustahsan4888
    @syedmustahsan4888 5 місяців тому

    Thanks a lot. That was awosome

  • @dharnie9861
    @dharnie9861 4 роки тому

    Thanks for this guide

  • @magnus4681
    @magnus4681 3 роки тому +1

    Is there a way to watch these in the correct order? :D

  • @PrachitiPimple
    @PrachitiPimple 4 роки тому

    Great video...good explaination👍🏻

  • @coneman1015
    @coneman1015 Рік тому

    5:24, sorta got lost after this, can anyone help me out?

  • @kallolbrc
    @kallolbrc 4 роки тому +4

    Great video! Very interesting... what software are you using to draw the lines? It seems very flexible and effective.

    • @RubyMaster13
      @RubyMaster13 Рік тому

      Pretty sure it's just Khan Academy's software.

  • @awabqureshi814
    @awabqureshi814 7 років тому +11

    What program is this? I am considering using it for sketching my own graphs and such

    • @maxrod98
      @maxrod98 5 років тому +1

      SmoothDraw 3 i just googled it, and it is free

    • @nogapres3007
      @nogapres3007 4 роки тому

      @@maxrod98 that rhymed

    • @shrutisingh8903
      @shrutisingh8903 3 роки тому

      @@nogapres3007 😂😂😂😂😂😂

  • @fekimisbah4085
    @fekimisbah4085 2 місяці тому

    How can get it the next video?

  • @jesusvelazquezdelatorre8060
    @jesusvelazquezdelatorre8060 3 роки тому

    Great video THANKS!!!

  • @RachelPun
    @RachelPun 2 роки тому

    Why are both correlation coefficient and residual "r"?? Isn't that confusing?

  • @mateoafshar3906
    @mateoafshar3906 3 роки тому +2

    I still do not understand the reason why my teachers don't use these as an explanation video instead of something else.

  • @chathurapriyashan5531
    @chathurapriyashan5531 9 місяців тому

    very very clear

  • @Regressor14
    @Regressor14 2 роки тому

    what is difference between residuals and bias?

  • @nitnvg
    @nitnvg 6 років тому

    fantastic explanation

  • @DKTheWhiteMexican
    @DKTheWhiteMexican 7 років тому +4

    Great video. Too bad I finished my stats class 2 weeks ago ]= I could of used it.

  • @abdulrahmanradwan6167
    @abdulrahmanradwan6167 4 роки тому

    It is very useful

  • @larissacury7714
    @larissacury7714 2 роки тому

    thank you!

  • @kelvinmuinde3208
    @kelvinmuinde3208 3 роки тому

    Please make the board on light mode.. The writings on the board aren't visible

  • @A.K04
    @A.K04 5 років тому

    Thank you.

  • @wenh428
    @wenh428 3 роки тому

    Reviewing to prepare for my interview tomorrow 😅

  • @truthigiraneza6489
    @truthigiraneza6489 7 років тому

    Nice work!

  • @christophegauthier5945
    @christophegauthier5945 3 роки тому

    You're mixing up weight and height at around 3:30.

  • @КрлЮрич
    @КрлЮрич Місяць тому

    I'm not sure but I can see a suspicious moment in this video
    Your line is approximately y = 5x - 175
    if you'll give to ur model the 60 value, it returns 125. Not 150. You've drawn the line that is parallel with axis Y, but it has to be perpendicular for your regression line, doesn't it?

  • @calebkim2275
    @calebkim2275 7 років тому +10

    Who's here for finals carnegie

  • @davidecontu3870
    @davidecontu3870 9 місяців тому

    If the aim of the least squares is to elevate the residuals to allow them to have a larger impact in the model, why don't we elevate them by 3, 10, 1000...? That would represent an even higher impact in the model

  • @mr.physica9839
    @mr.physica9839 7 років тому

    please make tutorial videos on tensor

  • @absolute___zero
    @absolute___zero 4 роки тому

    you forgot to mention about *unobservable* and *observable* values

  • @SarcyseTiranin
    @SarcyseTiranin 7 років тому +13

    I have no idea what this video is talking about...... yet.

    • @galeboetticher485
      @galeboetticher485 7 років тому

      SarcyseTiranin In which grade are you, and from which land?

    • @hadleyd
      @hadleyd Рік тому

      you ever find out?

    • @SarcyseTiranin
      @SarcyseTiranin Рік тому +1

      @@hadleyd I don't even remember leaving this comment dude. Lol.

  • @waxbias
    @waxbias Рік тому

    i still don’t get it :/ you lost me at weight =m(height)+b what does that mean!! please am i like severely mentally i’ll and can’t understand rules or was it not directly explained why we suddenly wrote that like the cause not even why but the why for the why

  • @ephemeraldoodles4579
    @ephemeraldoodles4579 7 років тому +2

    70thviewer, 3rd liker, 3rd comment! 😁

  • @m00gan64
    @m00gan64 4 роки тому

    still confused. its too fast for me

  • @PatrickQuiller-x7k
    @PatrickQuiller-x7k 3 місяці тому

    Powlowski Extension

  • @russellscales
    @russellscales 5 років тому +1

    where my precalculus gang

    • @ABC2691
      @ABC2691 5 років тому

      im here lol

  • @WallaceNick-h1s
    @WallaceNick-h1s 3 місяці тому

    Ratke Fields

  • @goldenscout2
    @goldenscout2 Рік тому

    I can literally NEVER understand ANYTHING from their math videos and everyone is saying how simple it is what??

  • @elizabethrobalino1317
    @elizabethrobalino1317 5 років тому +1

    Sal does good in the video, he always does, but i don't know why his voice annoys the heck out of me!

  • @iheartrod0211
    @iheartrod0211 5 років тому

    midterms 😣!

  • @Allyicool
    @Allyicool 5 років тому +1

    I owe you my degree. Can you be my dad ?

  • @catherinewalpole5698
    @catherinewalpole5698 5 років тому

    i somehow get more confused listening to you hop around so much. please be more organized