Bayesian Statistics with Hannah Fry

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  • Опубліковано 28 бер 2019
  • You can buy Hannah's great book Hello World from loads of places: www.hannahfry.co.uk/helloworld
    Including signed copies on Maths Gear!
    mathsgear.co.uk/collections/b...
    My book Humble Pi is available signed on Maths Gear, as well as un-signed from all the usuals.
    SIGNED mathsgear.co.uk/collections/b...
    UNSIGNED www.amazon.co.uk/Humble-Pi-Co...
    The history of Thomas Bayes.
    www-history.mcs.st-andrews.ac....
    All about the theorem named after them.
    mathworld.wolfram.com/BayesThe...
    Huge thanks to the current residents of the house who tolerated us running around and invading their weekend. All in exchange for two awesome maths books.
    Thanks to Ben Sparks for crafting the Geogebra animation of the surface.
    CORRECTIONS
    - Nothing yet unless you count a slight continuity error with the door in the background. Let me know if you spot anything more serious than that!
    Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset:
    Christian Schadewald
    Thomas Hodnemyr
    Richard Fourie
    Maksym Borodin
    Laura Dale
    Support my channel and I can make more maths videos:
    / standupmaths
    Music by Howard Carter
    Filming and editing by Trunkman Productions trunkman.co.uk/
    Sound production by Peter Doggart
    Design by Simon Wright
    Runner and assistance by Max
    MATT PARKER: Stand-up Mathematician
    Website: standupmaths.com/
    NEW BOOKk: wwwh.umble-pi.com
    Nerdy maths toys: mathsgear.co.uk/
  • Розваги

КОМЕНТАРІ • 640

  • @JonathanCorwin
    @JonathanCorwin 5 років тому +2058

    "Everytime you're throwing the ball you're getting more information about... " where the table isn't

    • @rititone
      @rititone 5 років тому +176

      Ah, the Parker Throw...

    • @MrRyanroberson1
      @MrRyanroberson1 5 років тому +65

      Parkesian statistics

    • @ekinteko
      @ekinteko 5 років тому +28

      I don't know why they didn't just play Battle Ships... its based on Bayesian reasoning!

    • @jursamaj
      @jursamaj 5 років тому +13

      "where the table isn't"
      It's a Parker Square table…

    • @amante2443
      @amante2443 2 роки тому +1

      @@ekinteko I believe you and your comment to be genius!!! 😱
      I believe this based on my never having thought of this example nor have I seen anyone else explain bayesian statistics with such a sublimely simple example. I, and the others, all use really stupidly complicated examples.
      Note, I'm not saying I'm a genius. But I'd bet, at least one of the other mathematicians I've referred to regarding Bayesian statistics, might be.
      BUT @Kangal, like Rev. Bayes (who I believe to be a believer) and Pascal (who I'd wager was also a believer), I believe you and your comment to be genius.
      If there wasn't a virus going around I'd kiss you. 😘

  • @tasherratt
    @tasherratt 5 років тому +1128

    Hannah is getting plenty of practice as to being a mum of a toddler here.

    • @user-yv6bo2yv3i
      @user-yv6bo2yv3i 3 роки тому +15

      This might be the best comment I've ever seen on UA-cam

    • @EcceJack
      @EcceJack 2 роки тому +2

      Ahahahaha 😂😂😂 this REALLY got me, for some reason!

    • @amante2443
      @amante2443 2 роки тому +5

      I've watched this video several times and I can't believe I've never noticed this comment. And when I did, I burst out laughing and nearly knocked over my cup of coffee onto a mum with a toddler on the next table (I'm in a cafe)? What's the statistical probability of that (i.e. there being a mum and the toddler while reading a comment about a mum and a [metaphorical? toddler)?

    • @thecanmanification
      @thecanmanification 9 місяців тому +1

      “Its okay, we can do it again 😃”

  • @framegrace1
    @framegrace1 5 років тому +1211

    - "What's the chance you find me here?"
    - "It's the first time I've found you here, so I don't know"
    I'll use that joke, with your permission...

    • @standupmaths
      @standupmaths  5 років тому +282

      It’s all yours!

    • @nikitaelizarov7444
      @nikitaelizarov7444 5 років тому +52

      That's a very frequentist approach to chances. After his conversion to Bayesianism, Matt wouldn't have said that ;)

    • @JorgetePanete
      @JorgetePanete 5 років тому +12

      well, we know that it's more than 0%

    • @lukasmuller6206
      @lukasmuller6206 5 років тому +18

      Chance is about predicting so in fact we actually know that the chance of them meeting is 100% since it happened, therefore has become a fact.

    • @danielemessina1979
      @danielemessina1979 5 років тому +4

      "It's the first time I come here" would have been funnier. :D

  • @Adam_Floyd
    @Adam_Floyd 5 років тому +1028

    “How good are you at catch” “I understand the theory” 😂😂😂

    • @elvis_mello
      @elvis_mello 5 років тому +11

      My history in experimental physics 😂😂

  • @ugabugasuga1
    @ugabugasuga1 5 років тому +2321

    Matt Parker: Making a pregnant woman repeatedly bend down and pick up his throws, while he is sitting in a comfy chair :P

    • @Spiros219
      @Spiros219 5 років тому +62

      I didn't notice she was pregnant

    • @chrisray1567
      @chrisray1567 5 років тому +539

      Parker chivalry

    • @AntonoirJacques
      @AntonoirJacques 5 років тому +203

      @@Peter_1986 You mean like being near a staircase?

    • @Sibula
      @Sibula 5 років тому +38

      I didn't even realize she was pregnant before your comment. Now that I looked again it's so obvious...

    • @thebugbear
      @thebugbear 5 років тому +156

      @@Peter_1986 I don't think they were saying it was dangerous, just a little rude since it's harder to bend down when you're pregnant :)

  • @martijnvanweele6204
    @martijnvanweele6204 5 років тому +245

    Schrödinger, Descartes and Bayes walk into a bar. The bartender asks: "Would you gentlemen like a drink?"
    Schrödinger says: "Yes and no."
    Descartes says: "I don't think so."
    Bayes says: "I'm not certain."

  • @jarredallen3228
    @jarredallen3228 5 років тому +201

    "I was a certaintist...I don't know."
    You don't sound like a very good certaintist.

  • @bellsTheorem1138
    @bellsTheorem1138 5 років тому +98

    "Embrace uncertainty, but quantify it" is my new motto.

    • @Laurabeck329
      @Laurabeck329 3 роки тому +2

      This has the same energy as "Take it easy, but take it"

  • @bartjennings
    @bartjennings 5 років тому +353

    Some Parker throws right there

    • @TheDiggster13
      @TheDiggster13 5 років тому +25

      In fairness to him he did give it a go, even though he wasn't entirely successful

    • @Bodyknock
      @Bodyknock 5 років тому +8

      Clearly it was a Parker Square Table. 🙂

  • @falsenames
    @falsenames 3 роки тому +103

    Can I just have Hannah and Matt explain everything to me? The sheer enthusiasm for math on display is infectious.

  • @L0j1k
    @L0j1k 5 років тому +51

    "And thanks to the owners of the house! Turns out, one of them's a mathematician..."
    This is the least surprising statement I think I've ever heard in my life.

  • @NoNTr1v1aL
    @NoNTr1v1aL 5 років тому +289

    "It's all about that Bayes" - Thomas Bayes probably.

    • @karlkastor
      @karlkastor 5 років тому +29

      There's a paper titled "Drum'n'Bayes". They use Bayesian networks for pattern recognition on music.

    • @judicator375
      @judicator375 5 років тому +17

      "Its all about that Bayes - no table" :-)

    • @panda4247
      @panda4247 5 років тому +3

      I think, you guys may be a little bit biased.

  • @micahlong2073
    @micahlong2073 5 років тому +143

    6:03 One mathematician tells another mathematician to be more random.
    The irony here is delightful.

    • @user-ky6vw5up9m
      @user-ky6vw5up9m 3 роки тому +1

      Micah Long why ironic?

    • @AtticAurel
      @AtticAurel 2 роки тому +2

      @@user-ky6vw5up9m
      I think because you can be either random or not. It's hard to be "more" random. You could increase the sample size of course or the step size, but random is random, it doesn't become more random.

  • @evilotto9200
    @evilotto9200 5 років тому +195

    4:10 Hannah's exasperated declaration of "Try" should cause you lot to call and thank your mothers.

    • @aj76257
      @aj76257 5 років тому +1

      I love your profile picture and username! I wish more people were familiar with Berzerk.

    • @assafabram9649
      @assafabram9649 5 років тому +6

      Hanna Try

  • @xela8384
    @xela8384 5 років тому +192

    I've never seen Bayes' fundamental insight so amusingly explained. Nor so clearly. Nicely done! (Also: congratulations to Dr Fry on the forthcoming addition to your family!)

    • @karlkastor
      @karlkastor 5 років тому +7

      I have heard that throwing the ball on the table example before, but actually seeing it being done makes it so much clearer to understand!

    • @warrenyazzie9975
      @warrenyazzie9975 5 років тому +3

      Have you read the paper they are referring to? This experiment is discussed in Section II. It's one of those things you have to draw on paper or do in real life to get a proper feel for what Bayes' saying. What I found really interesting is that Rice's motivation for submitting this paper was for it to be used as proof of Intelligent Design. 😮

    • @topilinkala1594
      @topilinkala1594 Рік тому

      @@warrenyazzie9975 Actually I'd say that Bayesian view excludes gods alltogether. There's no confidentialy, that you can measure, about exitence of a physical god. There is good examples of a methaphorical gods exitance though. Look for example all churches and temples and what not and ask if the builders had a god in their mind when they did those. But a mtphorical god is like justice: it exists only in deeds and thoughts of men.

  • @jwb_
    @jwb_ 5 років тому +114

    Literally bought Hello World an hour before this video was released. Now I have 2 great maths books to get absorbed into. Maths books are like buses, you wait years for a good one and then 2 turn up almost at once!

    • @karlkastor
      @karlkastor 5 років тому +6

      Do you think Hannah's book is good for actual computer programmers? I would read it if it is more about the ethics and psychology relating to algorithms, but if half of it is trying to explain algorithms in laymen's terms I would not enjoy it.

    • @snookerbg
      @snookerbg 5 років тому +3

      quote of the century

    • @amber1862
      @amber1862 5 років тому +6

      @@karlkastor It's definitely more about the ethics of the algorithms used in our modern world, and she rarely explains what the algorithms are and how they work (only enough to potentially peak interest so you go off and Google it). It's not a book to read if you want answers and definitions, it's a book that presents questions you didn't even think about asking in the first place. It's terrifying and hilarious, but mostly terrifying; I highly recommend it :).

  • @TacoDude314
    @TacoDude314 5 років тому +113

    I wish Hannah Fry had a UA-cam channel

    • @ViatorRex
      @ViatorRex 5 років тому +8

      At least we've got "The Curious Cases of Rutherford and Fry"

    • @blueskyredkite
      @blueskyredkite 5 років тому

      @@ViatorRex Oh! Is that this Rutherford?!

  • @wittycommentator
    @wittycommentator 4 роки тому +9

    When I was in high school statistics we were talking about Bayesian probability, and one of my classmates asked "Isn't that a black asian?", and my teacher said "no I believe that's blasian" and I will always remember that interaction.

  • @thontor
    @thontor 5 років тому +5

    This is the first i've seen or heard of Hannah Fry. I'm already a fan. She is awesome.

  • @olik136
    @olik136 5 років тому +145

    they should make an audiobook together where they simultaneously read their 2 books...

  • @faielgila7375
    @faielgila7375 3 роки тому +5

    6:00 "you're actually remarkably consistent"
    "Consistency is only a virtue if you're not a screw-up" -Grant Sanderson

    • @fahrenheit2101
      @fahrenheit2101 2 роки тому

      Can always count on Grant to come up with the goods!

  • @rafbambam
    @rafbambam 2 роки тому +5

    It is official YOU DO NEED TO DO MORE WITH BOTH OFF YOU. The interaction (and faces drown) between you guys is hilarius to watch, and we are learning at the same time. Great video.
    Greetings from Belgium.

  • @igorperfeitovivo
    @igorperfeitovivo 2 роки тому +5

    They always have so much fun together, that it spreads and reaches us through.

  • @yuvalne
    @yuvalne 5 років тому +87

    Parker throw (I had to)

  • @mrswats
    @mrswats 5 років тому +23

    Always love to see Hannah Fry! Loved this one as well.

  • @BobfromSydney
    @BobfromSydney 5 років тому +14

    "As I throw more balls my confidence in my throwing skills lowers asymptotically towards zero."

  • @ditzfough
    @ditzfough 5 років тому +5

    Anybody else find Hannahs voice soothing? Intelligent and beautiful but the voice gets me everytime.

  • @twinklestar3556
    @twinklestar3556 5 років тому +49

    Love your silly mathloving face! That smirk and side eye gets me every time!

  • @devtech1000
    @devtech1000 5 років тому +69

    congrats for the baby!

    • @Zolbat
      @Zolbat 5 років тому +12

      And to the father

    • @LordNezghul
      @LordNezghul 5 років тому +12

      Yeah, another person to suffer on this world.

    • @lydianlights
      @lydianlights 5 років тому +12

      @@LordNezghul oof edgy

    • @joshuawan7004
      @joshuawan7004 5 років тому +3

      @@LordNezghul only Jesus can end our suffering

    • @JorgetePanete
      @JorgetePanete 5 років тому +4

      @@joshuawan7004 lol wtf?

  • @Dixavd
    @Dixavd 5 років тому +83

    A video with two hosts where one is sitting down for most of the video while the heavily pregnant woman has to stand the whole time... Fine work, Matt! In all seriousness, this was a lovely video and the playfulness between you two is infectious.

    • @user-vn7ce5ig1z
      @user-vn7ce5ig1z 5 років тому +2

      She's the expert, so she's the one that came up with the experiment.

  • @adamsbja
    @adamsbja 5 років тому +15

    "If you had an infinite number of throws, and you could throw them perfectly randomly..." he would miss the table most of the time.
    It's like the old joke (well, I'm old and I was told the joke) of a physicist trying to explain the Monte Carlo method in a bar, so they describe it in terms of throwing darts at a dartboard. Come back next week and the bartender says "welcome back, I loved your explanation. Has your aim gotten any better?"

  • @benjaminplatt4109
    @benjaminplatt4109 5 років тому

    Always love videos with Hannah, congrats on her upcoming family too

  • @77Chester77
    @77Chester77 5 років тому +9

    Matt and Hannah are a great team, I enjoyed this video very much.

  • @perman17
    @perman17 5 років тому +1

    Excellent video. Thank you Dr Fry and Matt!

  • @marctelfer6159
    @marctelfer6159 5 років тому +39

    Another Parker/Fry video? Ummm, hell yes! Love you two :D

    • @_zelatrix
      @_zelatrix 3 роки тому +1

      They should write a joint book titled "Tinker, Tailor, Parker, Fry"

    • @vigilantcosmicpenguin8721
      @vigilantcosmicpenguin8721 3 роки тому

      @@_zelatrix I'm sure they could find two mathematicians with apt names who can be given credit as co-authors.

  • @BillyEilish
    @BillyEilish 2 роки тому

    You guys are great, Matt. Love the dynamic between the duo!

  • @NanoDomino1
    @NanoDomino1 5 років тому +39

    I would have loved to see Matt throw the second ball directly on the first ball and Hanna tell him that the coordinates of the balls are exactly the same.
    Great video! :D

  • @Rizon1985
    @Rizon1985 5 років тому +22

    I've never seen a video where Hannah isn't pregnant. So make sure you have the correct data before you make conclusions from it.

  • @rickseiden1
    @rickseiden1 4 роки тому +3

    I know it's been a long time since this came out, but I have to say, the best part of this video is watching two good friends have fun with each other!

  • @RafaelAcurcio
    @RafaelAcurcio 2 роки тому +1

    The humor is on point. Love the videos

  • @Rogue_Fox
    @Rogue_Fox 4 роки тому

    Mr. Parker I absolutely love your videos! And Hannah being in this one makes it even better!

  • @dlanska
    @dlanska 2 роки тому +1

    I love this duo. Great chemistry.

  • @sevret313
    @sevret313 5 років тому +29

    You should use this uncertainty to save your Parker Square.

  • @GuanoLad
    @GuanoLad 5 років тому +6

    Statistics indicate Hannah Fry will always be a great guest.

  • @Scapestoat
    @Scapestoat 4 роки тому

    You guys look like you're having so much fun!
    I love it~

  • @msaadnadeem
    @msaadnadeem 5 років тому

    This is the content I subscribed for and I'm definately not disappointed

  • @MichaelCampbell01
    @MichaelCampbell01 5 років тому

    You 2 are absolutely delightful.

  • @mattstuart2429
    @mattstuart2429 5 років тому +6

    I love this! I'm taking a class on Bayesian statistics now, and I would consider myself a Bayesian vs a Frequentist.

  • @kujmous
    @kujmous 5 років тому

    Both of you keep math fascinating, and you're both loved for it.

  • @keyem4504
    @keyem4504 2 роки тому

    The two of you are so entertaining. I really love it. 😁

  • @BritishBeachcomber
    @BritishBeachcomber 3 місяці тому

    Two of my three favourite Mathologers having fun.

  • @titleloanman
    @titleloanman 5 років тому +5

    Hannah Fry is a treasure

  • @Galakyllz
    @Galakyllz 5 років тому +1

    This was great! Thanks for the maths and the laughs.

  • @deeliciousplum
    @deeliciousplum 2 роки тому

    Wionderful and clear explanation. And, a priceless end skit of sharing about two books.

  • @zip95843
    @zip95843 2 роки тому +2

    Their duo is killing it! Good match!

  • @SianNadine
    @SianNadine 5 років тому

    Really appreciate this because that equation is on my wall as I’m revising statistics for my semester 2 first year exam and this has given me some insight

  • @Cory_Springer
    @Cory_Springer 3 роки тому +4

    8:26 Matt's face when he imagines having an infinite number of throws

  • @myspacetimesaucegoog5632
    @myspacetimesaucegoog5632 5 років тому

    Bayes rocks! And probably rules too. Thanks for such a fun rundown on the basic approach

  • @IpsitDhal
    @IpsitDhal 5 років тому +6

    these conversation is like two mathematicians flirting each other.

  • @brutalkangaroo30
    @brutalkangaroo30 3 роки тому

    Hannah and Matt are a great combo for making math fun!

  • @KuyVonBraun
    @KuyVonBraun 5 років тому +4

    You guys need your own tv show 💜

  • @Frownlandia
    @Frownlandia 5 років тому +46

    Am I the only one getting strong Beverly Crusher vibes from Hannah in that jacket?

    • @gothicsoldier
      @gothicsoldier 5 років тому +8

      Well, I am now

    • @cawfeedawg
      @cawfeedawg 5 років тому +4

      Hush Wesley.

    • @chantelm9255
      @chantelm9255 5 років тому +2

      I didn’t the first time but just watched this again, and that’s the first thing I thought when I saw Hannah!

  • @flightvision
    @flightvision 5 років тому

    What a beautiful lesson.

  • @brunopaganeli2464
    @brunopaganeli2464 3 роки тому

    Nice explanations. It will be very useful to me! Tks.

  • @nialltracey2599
    @nialltracey2599 5 років тому

    Excellent, excellent, excellent video.
    I studied Computer Science at uni, with a little bit of AI.
    Bayesian statistics was important, but I never knew where Bayes was coming from. My eyes are well and truly opened.
    And of course, many congratulations to Dr. Fry.

  • @ayushthada9544
    @ayushthada9544 5 років тому

    This is the best video I have seen this month.

  • @alexanderschestag3247
    @alexanderschestag3247 5 років тому

    Great fun, as always!

  • @raindog9862
    @raindog9862 Рік тому

    This is one of my favorite things on youtube

  • @NicolaCappellini
    @NicolaCappellini 5 років тому

    OMG two of my favorite people!

  • @Mr_Mooo
    @Mr_Mooo 5 років тому

    Loved the plugs at the end, very nice indeed

  • @larcomj
    @larcomj 2 роки тому

    Brilliant video!

  • @markwong6548
    @markwong6548 5 років тому +5

    I heard "try more random" and I couldn't help laughing.

  • @MartiA1973
    @MartiA1973 3 місяці тому

    just brilliant!

  • @jamesjasso6002
    @jamesjasso6002 2 роки тому

    Great video, thanks

  • @deslomator
    @deslomator 5 років тому

    Love you guys.

  • @rafaellisboa8493
    @rafaellisboa8493 5 років тому

    so niceeee love your videos and love hannah

  • @sam08g16
    @sam08g16 5 років тому +76

    I don't care what the video is about, I read Hannah Fry I click.

    • @4trym
      @4trym 5 років тому

      She's just lovely!

  • @shockedpikachu7266
    @shockedpikachu7266 5 років тому +16

    Did you see that?!
    That table was a parker square!

  • @KalikiDoom
    @KalikiDoom 5 років тому

    Lovely video!

  • @muyiwaiyowu
    @muyiwaiyowu 4 роки тому

    Just reading the part of “Hello World” where Bayesian Statistics was discussed, and it reminded me of this video.
    This is probably what prompted me to buy the book in the first place!
    Took me a while, but I finally got around to reading it.
    Gotta pick up Humble Pi next!

  • @Tahoza
    @Tahoza 5 років тому +11

    The term I hear used that is more in contrast to Bayesian is "frequentist" just FYI. This is more looking at the things in a more Gaussian or Fischer way.

  • @Varksterable
    @Varksterable 5 років тому

    Finally! All that stuff I did in a previous job makes sense. I could do the computer stuff, I could do the mathematics stuff; but now I think I actually SEE what it's all about.
    Great job. I expect no less from this channel, but this one really struck a chord.
    😍Hannah
    🤩Matt
    The wrap-up from 11:00 or so should be a compulsory part of the education system.

  • @AlKaBen
    @AlKaBen 5 років тому

    As always genius and funny 👌
    Keep if up Matt and Hannah 👍

  • @ralphguichette9952
    @ralphguichette9952 Рік тому

    THANK YOU!

  • @pep_4_climate
    @pep_4_climate 29 днів тому

    Great science communicators! Science needs more Matts and Hannahs!👩‍🏫👨‍🏫

  • @perappelgren948
    @perappelgren948 5 років тому

    So good! 👍

  • @grzegorzcichosz8240
    @grzegorzcichosz8240 5 років тому

    „february”
    ah, love all those fresh videos

  • @bordershader
    @bordershader 5 років тому +2

    Apropos of nothing, please thank the owners of that house for letting us glimpse inside. It's beautiful!
    Also, congrats to Dr Fry. I genuinely didn't notice until I read these comments.

  • @RiCOW164
    @RiCOW164 5 років тому

    probably my favourite mathematician and my favourite school of inference in one video.. Matt Parker, you've done it again

  • @karlkastor
    @karlkastor 5 років тому

    I just wrote an exam on Bayesian/Belief networks. It's a very interesting topic. They are very useful. Like Hannah's self-driving car example, robots can never know for sure if their sensory inputs are correct, so you need to account for uncertainty by using Bayesian nets. Matt could do a video on Hidden Markov Models, which are the simplest Belief networks to understand.

  • @TimMeep
    @TimMeep 5 років тому

    A fun, interesting, educational duo - the king and queen of mathematical edutainment

  • @JBantha
    @JBantha 5 років тому

    Congratulations, Hannah!

  • @AxeManAnthony
    @AxeManAnthony 5 років тому

    Great collab.

  • @Cr42yguy
    @Cr42yguy 5 років тому +3

    Hannah and Matt in one video? Great start into the weekend!

  • @ChristianGardner
    @ChristianGardner 2 роки тому

    My favorite theorem

  • @peppybocan
    @peppybocan 5 років тому +6

    and now on Kolmogorov statistics!

  • @davidioanhedges
    @davidioanhedges 3 роки тому

    Many thanks to the stars of this - Hannah, Matt, the briefly appearing camera operator, and of course Hannah Jr ...

  • @aknopf8173
    @aknopf8173 5 років тому

    That outro was the cutest thing!

  • @sameerpurwar4836
    @sameerpurwar4836 5 років тому

    Amazing

  • @K1lostream
    @K1lostream 5 років тому +22

    I guess I just watched an episode of DudeParker?!