Variance (1 of 4: Introducing the formulas)

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  • Опубліковано 24 гру 2024

КОМЕНТАРІ • 45

  • @Defender2002
    @Defender2002 4 роки тому +21

    Just to say how grateful I am for your video's - I am nearly 70 and I took my Applied Maths degree many years ago and seeing your lessons has contributed to a decision to sign up for a second degree this year in pure maths. My dad was born in the latter part of 1899 and I often wonder what he would think of seeing a guy teaching maths all the way from Australia whilst he was sitting here in the UK - pondering the wonders of the internet is something your average high school student may not think about all that often. I'm sure to them the wonders of modern communication - all based on mathematical modelling and thinking - is just an everyday occurrence. May your excellent efforts continue.

    • @AriaHarmony
      @AriaHarmony Рік тому

      The internet is wonderful isn't it? Where I'm from easy access to science and math education is not possible, yet I now get to have top quality education without leaving the comfort of my home. It's amazing! :D

  • @thecustomer2804
    @thecustomer2804 4 роки тому +2

    I’ve been watching the videos in your Random Variables playlist and I have to say, I haven’t thought much about the Statistical applications of Calculus until I came upon it. I’ve been really liking this series. Keep up the good work!

  • @telugutechtechforall8676
    @telugutechtechforall8676 3 роки тому

    It has become an habit watching your videos. Enjoying your videos. Thanks for making these videos available in youtube.

  • @particleonazock2246
    @particleonazock2246 4 роки тому

    Look at the ratio of likes to dislikes, and then will you truly see Eddie Woo's sheer knack for teaching. Dislikers, take my advice to heart!

  • @babytrey2769
    @babytrey2769 4 роки тому +5

    I have my GCSE coming and this helps me

  • @SunitaYadav-qj8rz
    @SunitaYadav-qj8rz 4 роки тому +3

    If there will be another shakuntala Devi then he or she will be his student for sure.

  • @xavierxante8649
    @xavierxante8649 3 роки тому

    6:25 Why can't we use |x - μ| instead, in the formula of variance? That works too right?

    • @maximbrekhman4276
      @maximbrekhman4276 2 роки тому

      I’ve been wondering the same thing for a while now

  • @theyaghu
    @theyaghu 4 роки тому +1

    expect value means what sir

  • @sriragavmuthukumar2615
    @sriragavmuthukumar2615 4 роки тому +1

    sir, we are ready to see your upcoming book.. But your last book was like kind of activities..

  • @kapilgupta1027
    @kapilgupta1027 4 роки тому +3

    Bhai raat ke 3 baje maths Kon padhta hai.
    Love from India

  • @paulbletchly3615
    @paulbletchly3615 4 роки тому +1

    Great explanation and breakdown! Thanks from QLD

  • @deepaksheoran4645
    @deepaksheoran4645 Рік тому

    Why are we multiplying the probability with (x-expected value)^2

  • @Maths-Evolution
    @Maths-Evolution 4 роки тому +1

    Big fan sir fron india

  • @AmanKumar-hb3cb
    @AmanKumar-hb3cb 4 роки тому +1

    Hi Eddie,
    What happen if we take modulus of x-mu instead of squarring?

    • @matemaatika-math
      @matemaatika-math 4 роки тому

      Modulus by what?

    • @xavierxante8649
      @xavierxante8649 3 роки тому

      It's a good question and is related to least squares regression. But I too don't have a crystal clear understanding of it. Would love to hear his explaination.

  • @koungmeng
    @koungmeng 4 роки тому +1

    I would love to see the proof

  • @yashgaurkararts1529
    @yashgaurkararts1529 4 роки тому

    What grade students do you teach?

  • @samik9051
    @samik9051 4 роки тому

    He squared (x-u) so that we get a positive value, couldn't he simply have used modulus function?

  • @jmalagaban7995
    @jmalagaban7995 4 роки тому +1

    Plsss teach us about the number theory sir, chinese remainder theorem and some topics related to the number theory sir. Hopefully you can see this. Thanks

    • @particleonazock2246
      @particleonazock2246 4 роки тому +1

      Yes, perhaps even forge a connection between number theory and algebra, with cyclotomic polynomials. Then again, in all of his videos, he is adhering to the curriculum, wherein number theory doesn't appear so frequently.

  • @23smind
    @23smind 4 роки тому +3

    Если вы тоже из России: лайк

  • @lordmomstealer
    @lordmomstealer 4 роки тому

    Plz make vedio on lines and angle class 9

  • @yashmodi919
    @yashmodi919 4 роки тому +2

    Hello sir good morning

  • @qobilruzmatov48
    @qobilruzmatov48 4 роки тому +1

    Nice good

  • @b1u3y_x
    @b1u3y_x 4 роки тому

    I can’t belive there are no dislikes, even though I don’t understand this, but it means its really good.
    (I didn’t dislike the video by the way)

    • @matemaatika-math
      @matemaatika-math 4 роки тому

      Why do you think is that you don't understand this?

    • @b1u3y_x
      @b1u3y_x 4 роки тому

      @@matemaatika-math because i’m too yoinng to understand i’m doing factors and integers ;-;

    • @peacecop
      @peacecop 4 роки тому

      @@b1u3y_x Why are you here?

    • @b1u3y_x
      @b1u3y_x 4 роки тому

      @@peacecop I’m asking the same question.

    • @peacecop
      @peacecop 4 роки тому

      @@b1u3y_x Tell me after you'll have found the answer!

  • @mattiasphua5357
    @mattiasphua5357 4 роки тому

    Has Eric been changing the school he's been teaching in

    • @particleonazock2246
      @particleonazock2246 4 роки тому

      No, same school - Cherrybrook Tech High. Also, his name is actually Edward (shortened to Eddie), not Eric.

  • @williammunny9916
    @williammunny9916 4 роки тому +1

    *_John 4. 23 But the hour is coming, and now is, when the true worshipers will worship the Father in spirit and truth; for the Father is seeking such to worship Him. 24 God is Spirit, and those who worship Him must worship in spirit and truth.” 25 The woman said to Him, “I know that Messiah is coming” (who is called Christ). “When He comes, He will tell us all things.” 26 Jesus said to her, “I who speak to you am He."_*
    _Jesus Christ loves you. Only Jesus Christ saves. Repent and be saved. God bless you and your family in the name of Jesus Christ...._

    • @mrkitty777
      @mrkitty777 4 роки тому

      Isaiah 53

    • @sivvu_siv
      @sivvu_siv 4 роки тому +3

      But that comment isn't relevant here...
      Stop spaming Jesus

    • @005Ash
      @005Ash 4 роки тому

      Ezekiel 25:17
      The path of the righteous man is beset on all sides by the
      Inequities of the selfish and the tyranny of evil men
      Blessed is he who, in the name of charity and good will
      shepherds the weak through the valley of darkness
      for he is truly his brother's keeper and the finder of lost children
      And I will strike down upon thee with great vengeance and furious
      Anger those who attempt to poison and destroy my brothers
      And you will know
      My name is the Lord when I lay my vengeance upon thee

    • @mrkitty777
      @mrkitty777 4 роки тому

      @@sivvu_siv maybe it's his cat or dog pet pressing his phone 😮

    • @sivvu_siv
      @sivvu_siv 4 роки тому +1

      Perhaps