Expected Values, Main Ideas!!!

Поділитися
Вставка
  • Опубліковано 26 гру 2024

КОМЕНТАРІ • 410

  • @statquest
    @statquest  2 роки тому +9

    Support StatQuest by buying my book The StatQuest Illustrated Guide to Machine Learning or a Study Guide or Merch!!! statquest.org/statquest-store/

    • @adolfocarrillo248
      @adolfocarrillo248 2 роки тому +1

      Thank you for sharing your knowledge. This one was clear as the Ganges river, I mean where the main stream rises, near the Himalaya Mountains.😉

    • @statquest
      @statquest  2 роки тому

      @@adolfocarrillo248 Thanks!

    • @therealpattypooh
      @therealpattypooh 2 роки тому +1

      Just purchased my copy of Guide to Machine Learning. The first time I saw a video of yours was just some days ago, it was about PCA, and I couldn't believe I understood its concepts. You're exceptional. Thank you, Josh, I'm just addicted to your videos; they keep me motivated!.

    • @statquest
      @statquest  2 роки тому

      @@therealpattypooh Wow! Thank you so much for your support! BAM! :)

  • @efunchen
    @efunchen Рік тому +153

    Actually 100% of people in StatLand have heard of Troll 2 because you went around and asked everyone if they've heard of Troll 2 :)

    • @statquest
      @statquest  Рік тому +27

      :)

    • @satwiktutor
      @satwiktutor 11 місяців тому +24

      bammmm@@statquest

    • @Mr_ScrufMan
      @Mr_ScrufMan 10 місяців тому +16

      @@satwiktutorquite possibly triple bammm

    • @jainamshah3933
      @jainamshah3933 Місяць тому

      But they have heard it after he told them. So if he goes and asks people again then it will be 100%.

    • @Venky643
      @Venky643 11 днів тому

      thripple baaaamm....

  • @apah
    @apah 3 роки тому +188

    I binged your Statquest stat fundamentals and just finished it. Can't express how much it has helped me build a sense and create a solid base for my ongoing data science masters. The older i grow, the more i realize that in some areas of life, it is best to treat adults like the children they actually are in these specific areas. Unbelievably efficient. You're an amazing teacher who deeply understood how much repetition & maintaining a trail of thought is key (+ bite sized format). I managed to grasp an in depth understanding of most concepts with rarely if ever having to rewind thanks to the number of times you repeat and synthesize key notions. THANKS JOSH !!
    (Also you're hilarious, and i genuinely love your music and overall vibe, i been going through rough times health & study wise and just can't believe how you made my week, and how you made me enjoy learning probas/stats again)
    Cheers ♥

    • @statquest
      @statquest  3 роки тому +26

      Wow! Thank you very much! I'm really glad to hear that my videos are helping you. I also hope that your rough times will come to an end soon! :)

  • @MADaniel717
    @MADaniel717 3 роки тому +66

    I like the concept of statland

  • @kimiko495
    @kimiko495 9 місяців тому +6

    I wish professors in universities taught in this way. Thanks for making statistics so accessible. I felt very frustrated when I came here but now I am motivated to learn.

  • @danspeed93
    @danspeed93 3 роки тому +18

    Explaining clearly the expected values … I clearly understood them. Well done your mission is accomplished!

  • @aysenurfidan1122
    @aysenurfidan1122 Рік тому +7

    As someone who started to learn to code, and then data analysis and now dying to learn about ML in her 45 without any relevant background, your videos are life saver! I can understand all and I am enjoying it! You make me want to learn more. Thanks a lot!!!

  • @ScottEdwards2000
    @ScottEdwards2000 3 роки тому +24

    Great video. Can't wait to understand the n-1 thing. I've been waiting to understand that for a long time!

    • @statquest
      @statquest  3 роки тому +4

      Hopefully we'll get there soon! :)

    • @physicsfaith
      @physicsfaith 3 роки тому

      You are going to be disappointed... Its a mathematical fact based on the degrees of freedom. What does that mean? If I told you 10 numbers added to 100, do you need to know all 10 numbers or with 9 do you know what the 10th must be because the sum told you to last bit of information? Its going to be just like that here.

    • @ScottEdwards2000
      @ScottEdwards2000 3 роки тому

      @@physicsfaith cool I'd love to hear more. It's interesting that only the standard deviation needs to be divided by n minus one not the mean

    • @statquest
      @statquest  3 роки тому +2

      @@physicsfaith It's related to that, but the actual derivation is pretty complex.

    • @evanstoid
      @evanstoid 3 роки тому

      @@statquest attempting to understand the concepts of degrees of freedom and the intuitive understanding of why we need a smaller denominator for estimating the sample variance has only deepened my understanding of my ignorance of those concepts.

  • @nicolasabboud8577
    @nicolasabboud8577 Рік тому +9

    Your method of explaining concepts is unique. You made me love probability and statistics. Thank you a lot. 🌷

  • @mereraK
    @mereraK 10 місяців тому +3

    I saw a genius here today; he explained complex concepts in simple way. Thanks!

    • @statquest
      @statquest  10 місяців тому +2

      bam! Nice rhyme!

  • @mhdamayri2529
    @mhdamayri2529 3 роки тому +24

    I got very curious about Troll 2 and looked it up on the trivia part of the IMDB page it says :
    "The entire cast went to a casting call hoping to be extras, and ended up in lead roles."
    You can just imagine for yourself how the trailer looked like.

  • @ayomikunoyenuga821
    @ayomikunoyenuga821 Рік тому +3

    I already watched a video before this one to explain what Expected Value meant but when I came across Statquest, I knew I had to definitely watch this video
    I wasn’t disappointed. Your real-life adaptions for statistical concepts are really engaging, Josh!
    Kudos!

  • @justingomez9615
    @justingomez9615 9 місяців тому +1

    Bro, where was this channel all my life, cant believe I'm now stumbling upon this channel. Great Great style of teaching 👍

  • @cwtrain
    @cwtrain 3 роки тому +22

    Statistics at 10pm on a Sunday!? You better believe it! Woo!
    _buckles up_

  • @alainleclerc4523
    @alainleclerc4523 2 роки тому +2

    isthere a better teacher than you on earth? i don't think so. you are absolutly amazing!! you master the art to make complicated things easy and pleasant. you are so wonderful!! thank you very much for all your efforts in those videos. each one is a gem!! be blessed!!

    • @statquest
      @statquest  2 роки тому

      Thank you so much 😀!

  • @jasonfaustino8815
    @jasonfaustino8815 3 роки тому +1

    THANK YOU! You really are a lifesaver. Wish all educators have your “teach it to a 5yo” approach. I really appreciate you showing the cryptic formulas and then explaining it to me like 5

  • @bob_bobsen
    @bob_bobsen 2 роки тому +1

    Loved the sly comment about textbook clarity at 08:10

  • @chrisjm80
    @chrisjm80 3 роки тому +17

    Very clearly explained, thank you! Looking forward to the other videos in this series! StatSquatch FTW! 😄

  • @kevinding1204
    @kevinding1204 2 роки тому +4

    This is super helpful thank you soooooooooo much. I tried to read the textbook definition and it was way too boring/complicated to understand (doesn't explain enough) while your video just makes everything much clearer for me. Thanks!

  • @sxx2491
    @sxx2491 2 роки тому +1

    dude you saved my life once again with your clear explanation and the proper example

  • @chocolatemodelsofficial5859
    @chocolatemodelsofficial5859 Місяць тому +1

    This is super helpful for daytrading stocks, I understand probability so much better now, thanks.

    • @statquest
      @statquest  Місяць тому

      Glad you found it helpful!

  • @arc7244
    @arc7244 3 роки тому +1

    I can't thank you enough! I owe you a lot... The world needs teachers like you 🙂

  • @jaquelinemoreira7385
    @jaquelinemoreira7385 3 роки тому +2

    it's finally clear for me what the expected value means in practical. i'm amazed for it, Thank you so much!

  • @athensstudent2424
    @athensstudent2424 Місяць тому +1

    This is one of the best videos ever! Mannnn! felt like watching a good movie.

  • @blackmeteorite-rj3vw
    @blackmeteorite-rj3vw 7 місяців тому +1

    bro thank you for all that effort to simplify things

  • @Sikandar456
    @Sikandar456 15 днів тому +1

    I love your pace. Thanks

  • @cananakca1408
    @cananakca1408 3 роки тому +1

    BAM!!! I am hooked on your videos! You make it so easy for anyone to understand.

  • @abdullahshahid9051
    @abdullahshahid9051 2 роки тому +1

    This is the best stats channel easily

  • @pptmtz
    @pptmtz 9 місяців тому +1

    Great job man, greetings from México City, you explain very clearly and the "translation" to fancy notation allows me to better understand some academic papers.

    • @statquest
      @statquest  9 місяців тому +1

      Muchas gracias!

  • @adnanornab5134
    @adnanornab5134 9 місяців тому +1

    You explained beautifully. Thank you.

  • @teosurch
    @teosurch 8 місяців тому +1

    Thank you, so clear explanation and an example about the usefulness of the expected value with the calculation of a bet profit!👍

    • @statquest
      @statquest  8 місяців тому +1

      Glad it was helpful!

  • @janilayturatkhankyzy1321
    @janilayturatkhankyzy1321 2 роки тому +1

    Thank you Josh, the way you explain is a masterpiece!

  • @apah
    @apah 3 роки тому +5

    BAAM it's finally here !
    Wuan wuan .. can't wait for part 2 & 3 (initially came for the n-1 thing :p)

  • @rajns8643
    @rajns8643 Рік тому +1

    The explanation was as brilliant as expected :)

  • @rishithashenal4048
    @rishithashenal4048 Рік тому +2

    If you asked everyone if they had heard about the Troll 2 movie before, then the next time you are asking everyone has heard of it.

  • @TrungTran-dp3ct
    @TrungTran-dp3ct 2 роки тому +1

    hey Josh,
    Thank you for all of your videos. Better than other online courses/resources, and it's totally FREE. You are GOD!

  • @yoshitareddy4137
    @yoshitareddy4137 3 роки тому +5

    BAM!! You are the best!! Thanks a lot, your videos have been very helpful ❤️

  • @faresmhaya
    @faresmhaya Рік тому +1

    I can't believe that I was never explained this concept in school. I memorized the name, I memorized the formula again and again every time I needed to use it, only to forget it afterwards, but I never understood the how and why. It's such a shame.

    • @statquest
      @statquest  Рік тому +1

      I hope the video was helpful.

    • @faresmhaya
      @faresmhaya Рік тому +1

      @@statquest It certainly was! Thank you for the work that you keep doing, and happy holidays!

  • @just_a_viewer5
    @just_a_viewer5 2 роки тому +1

    adore your videos so much, sir. thank you for helping me change my attitude towards this subject. may you get all the happiness you want

    • @statquest
      @statquest  2 роки тому

      Thank you very much! :)

  • @AJK-a2j00k4
    @AJK-a2j00k4 10 місяців тому +2

    The moment he says "it's time for Shameless self promotion" lololol!

  • @numberexplorerchannel1827
    @numberexplorerchannel1827 2 роки тому +1

    Million Baaamss. You just made all expected value confusions so cleeaarr. Salute👌

  • @nepsoldier8552
    @nepsoldier8552 3 місяці тому +1

    It was really understandable
    You should not stop uploading such content,🔥

  • @raduandreicosmin
    @raduandreicosmin 3 роки тому +6

    Looking forward to part 2!
    Continuous expected value is something I've been struggling to find a comprehensive, easy to understand explanation on.

    • @statquest
      @statquest  3 роки тому +3

      That should be coming out next week.

  • @fazelfallah4980
    @fazelfallah4980 День тому +1

    Clearly explained, nice video

  • @tayyabhussaintahir
    @tayyabhussaintahir 3 роки тому +2

    You are the best, please keep making these wonderful videos.

  • @catmeme4life220
    @catmeme4life220 3 роки тому +1

    Troll 2 is going to be the all I can think of during the midterm ... thanks...

  • @renzo13ok
    @renzo13ok 12 днів тому +1

    wow, such an amazing explanation!!!

  • @momentum742
    @momentum742 3 роки тому +1

    best person to learn math from

  • @farukapece
    @farukapece Рік тому +1

    Thank you very much for your very nice and clear explanation.

  • @vinitbipinjain
    @vinitbipinjain 2 роки тому +2

    Thank you so much for an amazing video and the pdf!

  • @mysticalpotato2110
    @mysticalpotato2110 3 роки тому +4

    Hi Josh, please make a video on degrees of freedom.. Thanks

  • @ericdanielasi5983
    @ericdanielasi5983 2 роки тому +1

    I sat through this and it's worth it.

  • @miguelcabrera9682
    @miguelcabrera9682 3 роки тому +3

    Awesome video. Thanks!

  • @LeCassiopeia
    @LeCassiopeia 2 роки тому +1

    I love you for creating this. This helps me so much.

  • @deeedledeee
    @deeedledeee 3 роки тому +2

    Thanks for the lottery system setup guide.

  • @kendesmarais9018
    @kendesmarais9018 Рік тому +1

    Josh you are the best! Thanks so much for your helpful videos!

  • @koustubhmuktibodh4901
    @koustubhmuktibodh4901 6 місяців тому +1

    Wow! what a great explanation.

  • @ichimatsu8422
    @ichimatsu8422 3 роки тому +1

    "Make it look more cryptic" this man knows the struggle

  • @anuragbisht1200
    @anuragbisht1200 Рік тому +1

    Statsland growth of population is quite significant from "conditional prob." video to this one 😄

  • @praveerparmar8157
    @praveerparmar8157 3 роки тому +3

    Super duper like for the video.
    Pity on the Statsquach 😀

  • @rishabhnarula1999
    @rishabhnarula1999 Рік тому +1

    great teaching, thank you sir. 👍😊

  • @rashmik19
    @rashmik19 Рік тому +1

    Alone maths has never helped me to learn data science skills, it's a combination of maths, intuition and the physical significance of the concepts. I found all of them here on your channel.

    • @statquest
      @statquest  Рік тому

      Hooray! I'm so glad my videos are helpful.

  • @anashaat95
    @anashaat95 2 роки тому +1

    Clear explanation. Thank you.

  • @vikat06
    @vikat06 2 роки тому +1

    Really good explanation!!

  • @Veto2090
    @Veto2090 Рік тому +1

    StatSquatch knows there's a Troll 2 viewing party happening at the local theater and he's about to fleese us

  • @yorchais
    @yorchais 3 роки тому +3

    Best explanation ever!

  • @skysummer1586
    @skysummer1586 3 роки тому +2

    Exactly what I need right now!!! Thank you so much!

  • @pon-poncedie4963
    @pon-poncedie4963 2 роки тому +1

    thank god I'm desperate to learn what school is trying to teach me. This was very good, as I was confuse how to read what the Big E was.

  • @emanelsheikh6344
    @emanelsheikh6344 2 роки тому +1

    Thank you so much 🙏

  • @rungrawin1994
    @rungrawin1994 Рік тому +1

    Love your explanation! Can you explain about LoTUS plsss.

  • @govamurali2309
    @govamurali2309 3 роки тому +2

    Waiting for Stat quest on degrees of freedom❤

    • @statquest
      @statquest  3 роки тому +1

      One day it will happen! :)

  • @stephenmaharaj5230
    @stephenmaharaj5230 3 роки тому +3

    Useful and fun. Thanks.

  • @ptxsv8705
    @ptxsv8705 Рік тому +1

    Omg this helps me understand so much quicker

  • @misnik1986
    @misnik1986 3 роки тому +2

    excellent job

  • @yitanglu6039
    @yitanglu6039 3 роки тому +4

    Could you make an album collecting songs in your videos? Love those songs.

  • @Vanadium404
    @Vanadium404 Рік тому +1

    12:15 Stats squach is the worst gambler ever 😂😂

  • @bibekanandabhattacharjee952
    @bibekanandabhattacharjee952 3 роки тому +1

    Fantastic, superb !!

  • @EN-wd9yu
    @EN-wd9yu 3 роки тому +2

    finally got it! quadruple BAM!!!!

  • @bablu_0k
    @bablu_0k Рік тому +1

    Dudeee... statsquach sure love to take risks 😂

  • @playerdreamer181
    @playerdreamer181 2 роки тому +1

    DUDE THIS IS SO COOL

  • @TheFobJang
    @TheFobJang 2 роки тому +1

    Loved it! And poor StatSquatch

  • @rashmik19
    @rashmik19 Рік тому +1

    Awesome content.....BAM!!! BAM!!! BAM!!!

  • @sidkapoor9085
    @sidkapoor9085 3 роки тому +1

    Intuitive build-up and explanation.

  • @h-s7218
    @h-s7218 2 роки тому +1

    Great and awesome video ever !

  • @maryemeraghi9316
    @maryemeraghi9316 3 роки тому

    Thank you Josh Starmer for putting together this video.
    However, I have a problem with your hypothesis:
    Listen again between the timeline 3:40 and 3:45,
    The bet was: $1 if the next person they met has "heard of Troll 2" but then you went on to say that they will loose the bet if the next person we met has "heard of Troll 2" and you assigned (-1) as the outcome. This is a contrast to what the bet proposed initially.
    Please kindly explain

    • @statquest
      @statquest  3 роки тому +1

      When you make a bet with someone, one person will win and the other person will lose. In this case, you and I are making a bet with StatSquatch. That means that if you and I win, then StatSquatch will lose and if you and I lose, then StatSquach will win.
      Now, in this case, if the next person we meet has "heard of troll 2", then StatSquatch will win $1 and we (you and I) will lose $1. Because we will loose $1 (because we lost the bet to StatSquach) and StatSquatch will win $1 (because they won the best against us), I put -1 to represent you and I loosing $1.

  • @b3_66_varadlatkar7
    @b3_66_varadlatkar7 2 роки тому +1

    Your voice is like I'm hearing a podcast

  • @monilcharola6873
    @monilcharola6873 2 роки тому +1

    Your videos are awesome !!!

  • @almonddonut1818
    @almonddonut1818 2 роки тому +1

    Thank you!

  • @mbs8249
    @mbs8249 Рік тому +1

    Thank you

  • @Ra-pt6tx
    @Ra-pt6tx 2 роки тому +1

    Great Job

  • @bebarshossny5148
    @bebarshossny5148 3 роки тому +1

    lovely channel, subbed!

  • @mixalisk.5413
    @mixalisk.5413 3 роки тому

    Josh hello from Greece!!! Thank you for all of your videos. Could you please consider making 1 or 2 statquests about time series? No matter how much I searched i couldn't find something comprehensive

    • @statquest
      @statquest  3 роки тому +1

      I'll keep that in mind.

  • @Spiderryder-
    @Spiderryder- Місяць тому +1

    This video is 3 years old but still amazing

  • @internallyinteral
    @internallyinteral 2 роки тому +1

    josh starmer is a great human.

  • @ccuuttww
    @ccuuttww 3 роки тому +1

    Hey can u talk about the E[ . ] sometimes it has MU~X subscription which I think is conditional Expected value can u teach us how to read it?

  • @setarehbakhshi6047
    @setarehbakhshi6047 Рік тому +1

    I loveeeeeeeeeeeeeeeeeeee your teaching method.

  • @mohammedabrar2871
    @mohammedabrar2871 2 роки тому +1

    A great video, keep help[ing out!

  • @ChelseaaaL
    @ChelseaaaL Рік тому +1

    Love the content. But I guess that we might lose the bet because in the survey, everybody kind of heard of the troll 2 in being asked the question have you ever heard of Troll 2😂😂😂😂

  • @futbolscoop
    @futbolscoop 2 роки тому +1

    Thanks , keep it up sir

  • @ankitagrawalgeneral
    @ankitagrawalgeneral 3 роки тому +1

    Dear Josh, Thank you for creating great videos and uploading in UA-cam for us. I was watching your Logistic Regression video and I was struggling with cross terms between differernt features. Do you know any literature on how to include cross terms in the model?

    • @statquest
      @statquest  3 роки тому +1

      I believe you are asking about interactions. Interactions are when two features can influence each other. Like you might have two different drugs that help reduce blood pressure, and when taken separately, that's what they do, but when taken together, you might end up with something completely different (like higher blood pressure or something else). That's an interaction and the "x" term accounts for that. Unfortunately I don't know of any good literature on the subject.

    • @ankitagrawalgeneral
      @ankitagrawalgeneral 3 роки тому

      @@statquest Thanks for the answer. Yes you got it absolutely right. I will check it. Can you cover Louvain and Leiden clustering in your upcoming videos. I want to hear from you about these techniques which are frequently used in single-cell community. Thanks a lot.