Bunnies, Dragons and the 'Normal' World: Central Limit Theorem | The New York Times

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  • Опубліковано 30 вер 2024
  • CreatureCast: The normal distribution crops up many places in nature. The central limit theorem explains how it provides a near-universal expectation for averages of measurements.
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    Bunnies, Dragons and the 'Normal' World: Central Limit Theorem
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КОМЕНТАРІ • 68

  • @ruhamar
    @ruhamar 4 роки тому +453

    pov: your statistics teacher sent u here

  • @ThePookie25
    @ThePookie25 7 років тому +151

    I need all my statistics explained like this.

  • @Kardash_xx
    @Kardash_xx 7 років тому +47

    Who else is here because they're studying Psychology at University?

    • @mansur_ali
      @mansur_ali 5 років тому +3

      I'm studying political science & international relations, our asst. professor played this to us in class.
      I LOVE THOSE PİKA-BUNNİES.

    • @matthewcox69
      @matthewcox69 5 років тому +5

      @@mansur_ali I'm here for stats

    • @onurcanisler
      @onurcanisler 3 роки тому +1

      *Stats my BOIISSS*

    • @tyrannosaurus5972
      @tyrannosaurus5972 3 роки тому

      Audiology student here🙋

  • @kimberly1863
    @kimberly1863 10 років тому +28

    I don't get why the bimodal distribution still turns into a normal distribution for samples... Anyone?

    • @darkhoof69
      @darkhoof69 10 років тому +38

      The samples actually will be bimodal, but the sample AVERAGES will be approximately normally distributed because the average is always in the middle of the two peaks as a measure of center. In fact, the reason the sample averages vary at all is purely because of random deviation, not because of the bimodal population. And random variation always has a normal bell curve shape.

    • @IvCastilla
      @IvCastilla 9 років тому +1

      darkhoof69 Is a condition of the universe, same as speed of light and Fibonacci sequence.

    • @olganeselevska7058
      @olganeselevska7058 8 років тому +1

      For example, average of binomial distribution will be any value in the interval between 0 and 1: e.g. 0,32; 0,47; 0,78 .... Then, these averages are not distributed as taking only two possible values, and they would follow normal distribution.

    • @simonahuang2633
      @simonahuang2633 7 років тому

      u know ,binomial distribution is the sum of n independent bernoulli distribution with the same probability of success. there is another version of central limit theorem, that is the sum of n independent variables with same expectation and variance will approximate to normal distribution when n is large. so , when n is large and p is relative small , the distribution of binomial can be approximated by normal distribution by following the central limit theorem.

    • @abzyfabzy6055
      @abzyfabzy6055 3 роки тому

      @@darkhoof69 so say the dragon wingspan on one peak is 20 metres and on the other it is 42 when we calculate the mean it is 62/2 which is 31, thus the peak in the centre of the curve is 31 and is shown to be one individual shaped curve, is that right?

  • @imartsy
    @imartsy 9 років тому +18

    This is fun, cute, and a great explanation!

  • @bercakpustaka4623
    @bercakpustaka4623 4 роки тому +11

    It makes Statistics interesting. It really helps me to teach my students about the concept of normal distribution. Thank you very much!

  • @elenam.4232
    @elenam.4232 4 роки тому +4

    MAT183?

  • @Lii1942
    @Lii1942 5 років тому +5

    OMG!!!! This is well-explained 😀I'll give an A+ rating for this ....... If only dynamics could be explained like this !!!😔....anyway ...thank you for this video❤

  • @chickenconoisseur1261
    @chickenconoisseur1261 2 роки тому +1

    Wer da wegem Luchsi? 😳😳😳😳😳😳😳

  • @Hollyrocks1975
    @Hollyrocks1975 3 роки тому +3

    Thank you! The central limit theorem explained clearly, and cutely. :)

  • @staceytorres2147
    @staceytorres2147 11 років тому +4

    Thank you. This is the ONLY youtube explanatory video I could understand, lol.

  • @katie1135
    @katie1135 9 років тому +5

    So cute!!!!

  • @revin_john
    @revin_john 4 роки тому +2

    Who else is here because of Stats in University of Pretoria

  • @LewianBra
    @LewianBra Рік тому +1

    If the underlying distribution is normal, the sampling distribution is normal for any sample size and doesn't become more normal with increasing sample size as claimed. This only holds if the underlying distribution is not normal. But then, in fact, no distribution in reality is perfectly normal (certainly rabbit sizes are not, as they cannot be negative). Note also that in practice the Central Limit Theorem may fail because of violations of the "identical and independent" assumption and for data quality reasons (for example with outliers).

  • @soukkhanhsila134
    @soukkhanhsila134 4 роки тому +1

    when did thee new york times start reporting on dragons as statistics?

  • @AlessandroZir
    @AlessandroZir 2 роки тому

    ok, but you left unexplained the most interesting feature of it! this video gives no insight on why &/or how we can use normal distribution to measure variables which are not normally distributed! if this is trivial, your entire argument is just tautological, and perhaps this is why you covered up its very core...

  • @khanhnguyen4739
    @khanhnguyen4739 4 місяці тому

    I was searching for bunny dragon hybrid babies but this is really cool too!

  • @lisapurnawati884
    @lisapurnawati884 10 років тому +2

    Clear explanation & entertaining. Like it!

  • @skabdussayeed3205
    @skabdussayeed3205 5 років тому +1

    Great ! helped me a lot in my biostat class

  • @BernhardPiskernik
    @BernhardPiskernik 10 років тому +1

    great video - the only problem is: means, at least for smaller samples, have Student's t distribution an not NV.

    • @jerzypiano
      @jerzypiano Рік тому

      Not quite! The t-distribution is for sample means (minus the population mean) DIVIDED BY sample standard deviations. The t-distribution arises because the sample SD is a noisy estimate of the population SD. So even if [xbar - mu] has a Normal distribution, the ratio [xbar - mu]/s has heavier tails than a Normal (more likely to get large positive or large negative values), and the t-distribution accounts for these heavier tails.

  • @lilikasukali
    @lilikasukali 5 місяців тому

    my statistics prof made me watch this

  • @HeduAI
    @HeduAI 3 роки тому

    Loved this!

  • @santoshharia445
    @santoshharia445 6 років тому +1

    Hall 4th period wya?

  • @onurcanisler
    @onurcanisler 3 роки тому

    *I see students are joining...*

  • @grecheltaucare9012
    @grecheltaucare9012 Рік тому

    Is there a form to know when the sample's mean comes from a nonnormal population?

  • @carloscabello164
    @carloscabello164 Рік тому

    Cy

  • @crissscrsz
    @crissscrsz 3 роки тому

    RICARDO MAYER ME TRAJISTE ACA!!!! AGUANTE UDP

  • @richardavelino7383
    @richardavelino7383 4 роки тому

    Hey what's up STATS 250

  • @leakyshoes8297
    @leakyshoes8297 Рік тому

    This has to be the future of learning.

  • @charu1930
    @charu1930 4 роки тому

    Thank you so much for such a simpler explanation

  • @ekaitzmitxelenaluloaga2056
    @ekaitzmitxelenaluloaga2056 3 роки тому

    EIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

  • @zodmorality
    @zodmorality 2 роки тому

    This was so wonderful!

  • @guiyomi0
    @guiyomi0 3 роки тому

    who here from marianopolis lmfao

  • @swaggyskye
    @swaggyskye 3 роки тому

    any hkust homies??

  • @galericiaydin4574
    @galericiaydin4574 5 років тому

    çağatay edemen brought me here

  • @anthonylaw117
    @anthonylaw117 4 роки тому

    ISOM 2500 send me here LOL

  • @caltommasone8440
    @caltommasone8440 3 роки тому

    they look like pikachu

  • @MikaylaMurphy130
    @MikaylaMurphy130 4 роки тому

    This was super cute and easy to understand! Thank you!

  • @ameernahas5619
    @ameernahas5619 2 роки тому

    Bachtel sent me

  • @ilkesoetens
    @ilkesoetens Рік тому

    Amazing 🔥

  • @LetsTex
    @LetsTex 4 роки тому

    I want more!!!!

  • @edutr
    @edutr 9 років тому

    very helpful for the likes of me, TY!

  • @paulhatch2433
    @paulhatch2433 6 років тому

    Great video, very helpful.

  • @marionm8213
    @marionm8213 8 років тому

    This is great

  • @freelandfitness
    @freelandfitness 11 років тому

    interesting

  • @Carooolinagarcia
    @Carooolinagarcia 8 років тому

    love it!

  • @humboldt777
    @humboldt777 9 років тому

    Love it!

  • @sarahhilst6486
    @sarahhilst6486 2 роки тому

    Hi joe