Standard Deviation Formula, Statistics, Variance, Sample and Population Mean

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  • เผยแพร่เมื่อ 28 พ.ย. 2024

ความคิดเห็น • 431

  • @TheOrganicChemistryTutor
    @TheOrganicChemistryTutor  11 หลายเดือนก่อน +10

    Statistics - Free Formula Sheet: bit.ly/47zjTVT
    Final Exams and Video Playlists: www.video-tutor.net/
    Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections

  • @elizabethkain75
    @elizabethkain75 3 ปีที่แล้ว +400

    You explained in 6 minutes what my college professor failed to teach in 2 weeks. Thank you so much!!!! I have a test on this next week and I was so lost. I spent three hours on a homework assignment because I didn't understand their wording and now I get it perfectly!!! Thank you!!

    • @manahelh.6104
      @manahelh.6104 ปีที่แล้ว +10

      uni and college sets students up for failure tbh

    • @lukekrawiec3522
      @lukekrawiec3522 ปีที่แล้ว

      im sorry, you do this in college???????

    • @lk6977
      @lk6977 ปีที่แล้ว

      @@lukekrawiec3522 yes?

    • @thegreatpapyrus3644
      @thegreatpapyrus3644 ปีที่แล้ว

      why? is there something wrong?
      @@lukekrawiec3522

    • @blossomluvsu9
      @blossomluvsu9 ปีที่แล้ว +5

      COLLEGE?? bro im struggling with this at 12 years old 😭

  • @wc4201
    @wc4201 2 ปีที่แล้ว +40

    i've been out of school for over a decade but recently returned to pursue an MBA. I literally learned more in 10 minutes than I did in my class last week. Thank you.

  • @soha1301
    @soha1301 3 ปีที่แล้ว +91

    Im crying.. 😭 you explained me something so perfectly my professor couldn't .. thank you soo much 🌹💯👏

    • @soha1301
      @soha1301 2 ปีที่แล้ว +1

      @@maxwong4918 if i could pay attention to this video, his way of teaching and understand the concept then why do you think I didn't pay attention to my professor 😂😂 anyways think as u like im glad i cleared my exams coz this guy I'll always be thankful 😊

    • @mriduldubey2920
      @mriduldubey2920 2 ปีที่แล้ว +1

      same scene as mine 😂😂

    • @Svelasc2
      @Svelasc2 5 หลายเดือนก่อน +1

      SAME!

  • @carlettaknoxseymour4406
    @carlettaknoxseymour4406 2 ปีที่แล้ว +78

    This man is phenomenal! He’s methodical and patient in his teaching. I learned so much from his video.

  • @wrjazziel
    @wrjazziel 4 ปีที่แล้ว +649

    I come to this channel for everything I don't understand from my University professors

    • @ayeshakoser5831
      @ayeshakoser5831 2 ปีที่แล้ว +12

      Same here😂😂

    • @mmhh3553
      @mmhh3553 2 ปีที่แล้ว +4

      Me too 😂😂😂😂

    • @alessandrozito7047
      @alessandrozito7047 2 ปีที่แล้ว +17

      University? I’m learning this in grade 10 yeah buddy your probably in the American school system that’s why

    • @chelsiiiwhoo4030
      @chelsiiiwhoo4030 ปีที่แล้ว +9

      @@alessandrozito7047 statistics isn’t mandatory in the US but you CAN take it and higher in our high schools.

    • @alvinbett111
      @alvinbett111 ปีที่แล้ว +1

      Same

  • @BMSKARATE
    @BMSKARATE 3 ปีที่แล้ว +63

    For programmers (Python): # sd_list = [3,5,7]
    top_row = [(x - mean(sd_list))**2 for x in sd_list]
    final_equasion = math.sqrt(sum(top_row) / 3)
    Amazing video, again and again! Thank you so much TOCT!

    • @zakattack786
      @zakattack786 2 ปีที่แล้ว +1

      hi

    • @CrimeWithEli
      @CrimeWithEli ปีที่แล้ว +3

      here's a cool python program I made for this:
      import numpy
      from math import sqrt
      heights = [175, 180, 190]
      new_heights = []
      x = len(heights)
      z = numpy.mean(heights)
      for i in heights:
      y = i - z
      y = y**2
      new_heights.append(y)
      for i in range(x):
      e = new_heights[i] / x
      new_heights[i] = e
      std_dev = sqrt(sum(new_heights))
      print(std_dev)

    • @NotGamingwithA1
      @NotGamingwithA1 2 หลายเดือนก่อน

      @@CrimeWithEli 💀

    • @ya-si127
      @ya-si127 23 วันที่ผ่านมา

      You saved a life

  • @xvingar6318
    @xvingar6318 ปีที่แล้ว +6

    i cant count on both of my hands how many times i watch your videos for help. In 9th grade from alegebra, chemistry, and alegrbra 2 to statistics first year in college, you helped me so much you dont understand

  • @war_correspondent
    @war_correspondent ปีที่แล้ว +30

    You just helped me summarized my 6 months class in 10 mins. This morning I got final, thank you so much!

    • @NotGamingwithA1
      @NotGamingwithA1 2 หลายเดือนก่อน +1

      How did it go?

    • @war_correspondent
      @war_correspondent 2 หลายเดือนก่อน +1

      @@NotGamingwithA1 will graduated soon :D

    • @NotGamingwithA1
      @NotGamingwithA1 2 หลายเดือนก่อน

      @@war_correspondent 😭🔥🔥🔥🔥🔥 Heck Yeah dude🤘⚡

  • @josuecarlos6941
    @josuecarlos6941 7 ปีที่แล้ว +133

    Long life for this channel!

  • @aussielife4604
    @aussielife4604 5 ปีที่แล้ว +47

    Thank you, you’re actually better than a university lecturer. Crazy!

  • @phillipsithole7275
    @phillipsithole7275 5 ปีที่แล้ว +18

    Moderate voice, standard explanations...everything perfect

  • @LauraTeAhoWhite
    @LauraTeAhoWhite 3 ปีที่แล้ว +5

    Whenever I get homework, this is channel is my first stop. This guy makes maths fun and easy to learn.

  • @jasonsusayajps3187
    @jasonsusayajps3187 4 ปีที่แล้ว +25

    I know there's someone here looking for better teacher than in our online class teacher this pandemic. 😁

  • @jilianbarganier1383
    @jilianbarganier1383 2 ปีที่แล้ว +1

    Your voice is so tranquil and your breakdown is so easy to understand

  • @รัมปะภัม
    @รัมปะภัม ปีที่แล้ว

    Thank you for the most understandable explaination. I understand literally NOTHING of what my prof said in the class. YOU ARE MY LIFE SAVER.

  • @sizuchii
    @sizuchii 4 ปีที่แล้ว +4

    yup, this guy has been one of the best tutor I've got. his voice is nice that makes me calm when it comes to math and the explanations are so easy to understand.

  • @nozimasobirova4300
    @nozimasobirova4300 5 ปีที่แล้ว +10

    thank you so much you help to students who are preparing 24 hours before the exam, keep it up

  • @NotReallyJas
    @NotReallyJas 8 หลายเดือนก่อน +5

    I just got mad watching this video cuz I’ve been in stats for 8 weeks and haven’t understood SHIT. But I come to this 10 minute video and everything is clicking and making sense 😭😭PLS KEEP MAKING THESE VIDEOS

  • @UberPretzel101996
    @UberPretzel101996 5 ปีที่แล้ว +14

    I’ve had the flu and missed classes this week thank you sir for helping me catch up.

  • @lauramartinez7009
    @lauramartinez7009 6 ปีที่แล้ว +34

    Your videos help me, you are much clearer explaining these problems than my professor and textbook

  • @muahna15
    @muahna15 ปีที่แล้ว +2

    you teach better than my prof .

  • @cindylee1965
    @cindylee1965 3 ปีที่แล้ว +7

    I sometimes did not catch up with some of my topics but coming across this channel saves me huge amount of time and he always make this topic much easier and interesting. You are the best. Thankyou

  • @hudsonfrank1121
    @hudsonfrank1121 หลายเดือนก่อน +1

    You explained this ten times better than my teacher did.

  • @DinithiJay
    @DinithiJay 3 หลายเดือนก่อน

    Thank you. You are literally covering almost all the course modules in my university life...

  • @flaxschoolacc1193
    @flaxschoolacc1193 6 หลายเดือนก่อน

    Tysm for your content! Thanks to you I scored a 72% on my statistics test! I usually get really bad grades on my math (between 25% and 46%) this is the first time I've ever gotten this good on math this semester. Really thank you

  • @phicsvinci
    @phicsvinci ปีที่แล้ว +2

    God bless this guy
    He's teaching skills are so special 👌

  • @mariacurotto2283
    @mariacurotto2283 4 ปีที่แล้ว +3

    bro you are so good!!!! you are saving my life right now!!! THE REAL MVP!!!

  • @claranceliberi
    @claranceliberi 3 หลายเดือนก่อน

    I am a programmer, I came here because I needed this to accomplish my task. Thanks alot.

  • @broncooccelien2946
    @broncooccelien2946 9 หลายเดือนก่อน

    I'm about to take an exam and bro you are a lifesaver definitely got that follow.

  • @jeremyk7378
    @jeremyk7378 9 หลายเดือนก่อน

    You are a genius and the reason why my understanding keeps improving, thank you for the content!!!

  • @kristylisak.3310
    @kristylisak.3310 ปีที่แล้ว

    Dang this is such a simple explaination of SD and Variance! I wish he went over practical examples like how this relates to reading statistical research papers! But his channel alone is the main reason I'm doing well in school!

  • @mmhh3553
    @mmhh3553 2 ปีที่แล้ว +2

    May Allah bless you thanks 🥺🤝🏼👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻i pray to Allah to bless and guide you to the right way of beautiful life here and hereafter

  • @peterpace3379
    @peterpace3379 5 ปีที่แล้ว +20

    I've been revising for JEE & other exams from your videos! Thanks a lot!!!

    • @cacalightx
      @cacalightx ปีที่แล้ว

      yo how did your jee go

  • @dignanavida5948
    @dignanavida5948 5 ปีที่แล้ว +15

    Really love your voice and your explanations are always on point! Good job! Happy that I found your channel.

  • @aragar8920
    @aragar8920 3 ปีที่แล้ว +1

    I am your fan!!!!!!! You are amazing at explaining!!!! And your tone calms me down, which helps me to understand!!!!!!

  • @spiderace7994
    @spiderace7994 3 ปีที่แล้ว

    You are a hero for all people with math help!

  • @ZeitunaAbdallah-fy9ee
    @ZeitunaAbdallah-fy9ee 7 หลายเดือนก่อน

    God bless the organic tutor he's such a life saver

  • @_av8
    @_av8 ปีที่แล้ว

    the comments on math videos are always positive. and like: this video taught me in minutes what teacher couldn't in weeks😁😁

  • @mikeugarte5351
    @mikeugarte5351 4 ปีที่แล้ว +1

    dude this account legit saved my life

  • @muhammadyousufkhuram4936
    @muhammadyousufkhuram4936 ปีที่แล้ว

    This guy helped in Differential calc, then integral calc, then stats, now in GIS courses 🤝

  • @ian8879
    @ian8879 6 ปีที่แล้ว +11

    A big thanks to you, this really really helps alot, i understand this lecture alot more than my Math teacher...

  • @mahathirhossain8526
    @mahathirhossain8526 3 ปีที่แล้ว

    this guy deserves everything

  • @corinnemcconnaughy3996
    @corinnemcconnaughy3996 3 ปีที่แล้ว +10

    thanks for your explanations! you've made online statistics so much easier to learn!

  • @alaurenfuentes
    @alaurenfuentes 2 ปีที่แล้ว +5

    you're an amazing teacher and I've used your videos for all my math classes. I wish you would teach teachers how to teach. Thank you

  • @isabelcontreras8472
    @isabelcontreras8472 3 ปีที่แล้ว +5

    the way u said sigma, made my day🥰🥰🥰

  • @machahensem3327
    @machahensem3327 ปีที่แล้ว

    i have exams this upcoming week, and you teach me better than my lect

  • @lisanguyen2397
    @lisanguyen2397 4 ปีที่แล้ว +4

    Thank you for detailed explanation , your video is always the best. Your are the reason I understand and pass my math classes.

  • @sabathilegumbi1691
    @sabathilegumbi1691 3 ปีที่แล้ว +6

    I always find his videos helpful. Thank you so much

  • @danielcahigas5016
    @danielcahigas5016 2 หลายเดือนก่อน

    This helped me several years ago and now I’m workong and using this in analysis. thank you

  • @AliHadi_
    @AliHadi_ 2 ปีที่แล้ว

    Thank you bro, missed 2 weeks of class and this is saving me.

  • @Ibex_17
    @Ibex_17 2 ปีที่แล้ว

    You're so Generalist to explain about all science disciplines briefly

  • @Chi_Nesha
    @Chi_Nesha 3 ปีที่แล้ว

    First of all, I love his voice but he helps me understand.

  • @venessoko1932
    @venessoko1932 5 ปีที่แล้ว

    OMG...this video was so helpful...the stress all long gone...thankyou very much..

  • @DUMITRUANDREEA-GEORGETA
    @DUMITRUANDREEA-GEORGETA ปีที่แล้ว

    ha ha i understand more from you than from my teachers explaining in my native language. thanks, man! you re awsome!

  • @gileamburce1315
    @gileamburce1315 ปีที่แล้ว +1

    Tysm l learn everything from you and lve been the honor of our class by the help of your vids

  • @wiggl3s_821
    @wiggl3s_821 ปีที่แล้ว

    I love you so much man, you’ve single handedly saved my ass when it comes to statistics. (I’m disastrously bad at maths so seriously, thank you so much)

  • @ordinaryblueberry4524
    @ordinaryblueberry4524 3 ปีที่แล้ว

    My favorite math youtuber

  • @PallyGonzalez
    @PallyGonzalez 2 ปีที่แล้ว

    seriously thank you so much, all my professor did was the way to find standard deviation is just do this equation here .

  • @samiatabassum9463
    @samiatabassum9463 ปีที่แล้ว

    You are way better than my ap stats teacher 😢😢

  • @Abby-hr8im
    @Abby-hr8im 5 ปีที่แล้ว +11

    You just saved my life thank you so much!!!! I have a midterm, and without this video I would of failed lmfao.

  • @AbdulrahmanHussain-t6n
    @AbdulrahmanHussain-t6n 11 หลายเดือนก่อน +1

    You have a good method of delivering lectures

  • @sspah6870
    @sspah6870 ปีที่แล้ว +4

    Thanks a lot, super concise and clear, you're a blessing man.

  • @siyabulelampinge564
    @siyabulelampinge564 3 ปีที่แล้ว

    This Guy is the Hope of mine in whatever mathematics challenge i face,A big Shout out to you Sir

  • @love_jjk
    @love_jjk 2 ปีที่แล้ว

    i finally know how to do math, im so grateful for your account TT

  • @LindtLain
    @LindtLain 2 ปีที่แล้ว

    Thank you so much❤ this literally saved me from my exam this week

  • @thecoffeebadger5807
    @thecoffeebadger5807 ปีที่แล้ว +1

    Thank you sir for showing me what the Sigma symbol represents. It appeared scary at first glance but that short explanation was all I need to use this formula with confidence.

  • @ashelymwinga1375
    @ashelymwinga1375 2 ปีที่แล้ว

    Well and simply explain, My best online tutor.

  • @redbutterflyinspo4654
    @redbutterflyinspo4654 3 ปีที่แล้ว +3

    If you’re preparing for an exam or test and are here you gots this and also these videos help so if you’re looking for feedback in the comments here is it

  • @Our.nostalgia657
    @Our.nostalgia657 3 ปีที่แล้ว +1

    Thank you professor, currently busy witha an assignment.

  • @dailydose5709
    @dailydose5709 3 ปีที่แล้ว

    He is way more better than my professor .

  • @lovesicktrick
    @lovesicktrick 3 ปีที่แล้ว +19

    Hello, when you are solving standard deviation, I don't see the part in the formula where we use (n-1). It's sqrt8/3 at the 6:00 mark in the video?

    • @ahuma6952
      @ahuma6952 2 ปีที่แล้ว +9

      I believe it's Because We are using the Population instead of a sample

  • @CrimeWithEli
    @CrimeWithEli ปีที่แล้ว +1

    here's a python program for standard deviation
    import numpy
    from math import sqrt
    heights = [175, 180, 190]
    new_heights = []
    x = len(heights)
    z = numpy.mean(heights)
    for i in heights:
    y = i - z
    y = y**2
    new_heights.append(y)
    for i in range(x):
    e = new_heights[i] / x
    new_heights[i] = e
    std_dev = sqrt(sum(new_heights))
    print(std_dev)

  • @rwothomioroy4173
    @rwothomioroy4173 2 ปีที่แล้ว

    Man! you are G.O.A.T👏

  • @givenpuje6106
    @givenpuje6106 2 ปีที่แล้ว

    thank you very much you have no idea how much you are helping me

  • @michellestolzenburg3062
    @michellestolzenburg3062 6 ปีที่แล้ว +2

    Thank you. You helped me get more statistics homework in on time.

  • @danplaysgames2666
    @danplaysgames2666 ปีที่แล้ว

    I like the way you simplify it. Thank you.

  • @davidson6116
    @davidson6116 3 ปีที่แล้ว

    this guy made standard deviation so simple but my teacher in school gave me a long winded complex explanation I did not understand

  • @dienekelle5548
    @dienekelle5548 2 หลายเดือนก่อน

    You have save me so many times!!! Thank you!

  • @jmoneyswag7815
    @jmoneyswag7815 2 ปีที่แล้ว

    you explained this wayyyy better than my teacher. im finally gonna do good on my retest. thank you so much sir

  • @YT.R_Oxido
    @YT.R_Oxido 7 หลายเดือนก่อน

    dude, i thank you so much sir, once again u saved me in my exam, i only have 2 problems wrong and its all because of arrangement i kinda rushed answering my exam, but still got highest, thanks

  • @gabriellamansfield7579
    @gabriellamansfield7579 2 ปีที่แล้ว

    I love this man, but the ads come right when I’m making a break through and then I lose focus

  • @eneshagarajayeva
    @eneshagarajayeva ปีที่แล้ว

    Your voice is so calming I love it I wonder what you look like in life)

  • @wandipebenny5597
    @wandipebenny5597 3 ปีที่แล้ว

    Thank so much my teacher didn't explain this topic and give me a assignment so when I watch this i understand n complete my assignment 🙏🏿💔🙏🏿

  • @shiromidassanayaka1500
    @shiromidassanayaka1500 ปีที่แล้ว

    You are a miracle worker💯

  • @ediblerice912
    @ediblerice912 4 ปีที่แล้ว

    You're the hero we need

  • @vvinterwitch
    @vvinterwitch 2 ปีที่แล้ว

    Thank you really helpful, my professor forgot to upload the lecture video for the hw due in a few hours

  • @matsen2c5-1
    @matsen2c5-1 ปีที่แล้ว

    My favorite channel,therefore every video that I watched makes sure subscribe and give thumbs up to appreciate him..top

  • @eyoshaphetyohannes294
    @eyoshaphetyohannes294 3 ปีที่แล้ว

    Long life for this channel

  • @SamiMouloudMerkouche
    @SamiMouloudMerkouche 8 หลายเดือนก่อน +2

    So basically the variance formula is same as the STD without the square root. thanks a lot buddy.

    • @asdfghjkl-vq2qz
      @asdfghjkl-vq2qz 7 หลายเดือนก่อน

      I see that you've understood everything without a problem, would you mind to give me some extra easy examples? You dont have to explain it in word, just example of set of numbers and the actual computation? Please i beg of you 😢

    • @livilia276
      @livilia276 7 หลายเดือนก่อน +1

      ​@@asdfghjkl-vq2qz
      I can help you

  • @jansmith8048
    @jansmith8048 3 หลายเดือนก่อน

    I needed this when I took statistics

  • @gmj2025
    @gmj2025 ปีที่แล้ว

    Thank you so much for your help! It’s easier when you teach it.

  • @hannahjuliagonzales6950
    @hannahjuliagonzales6950 4 ปีที่แล้ว +2

    Thanks for the video, I literally thought regular standard deviation was the same with Population and sample deviation

  • @HullBoy-ld6nf
    @HullBoy-ld6nf 3 ปีที่แล้ว

    Thanks! I got a quiz on this tomorrow!

  • @lilly6805
    @lilly6805 2 ปีที่แล้ว

    Wonderful video thanks for such a helpful video. And thanks to a teacher who helps their students in.

  • @michaelaguilera6287
    @michaelaguilera6287 3 ปีที่แล้ว +17

    Quick question, why is the standard deviation calculation you made for 3,5,7 not over n-1? I thought that 3,5,7 was a sample of the population 3,4,5,6,7. Just asking for clarification. I appreciate your channel it really helps me learn. Especially when I don't understand my professor, so thank you for your work.

    • @sarthakgarg35
      @sarthakgarg35 2 ปีที่แล้ว

      Hi Michael, I'd been struggling with the very same question personally for quite some time until I found the following video explanation and it just elevated my whole understanding of this concept to another level. Go ahead and give it a watch, I bet this would be a super productive one. Do let me know if this helps, Cheers! th-cam.com/video/ANsVodOu1Tg/w-d-xo.html

    • @wiggl3s_821
      @wiggl3s_821 ปีที่แล้ว +1

      I also thought this, is this a mistake?

    • @muahna15
      @muahna15 ปีที่แล้ว +2

      he just did the population standard deviation and not the sample.
      The sample formula is with n-1

  • @Tixlez108
    @Tixlez108 9 หลายเดือนก่อน

    Dude honestly thank you it took me 6 mins to learn it and perfect it rather then 45 mins 😂

  • @mputaostin3077
    @mputaostin3077 2 ปีที่แล้ว +1

    Thanx for the demonstration message be blessed

  • @RandoPassingBy
    @RandoPassingBy 8 หลายเดือนก่อน

    I love how I watched this video back in Yr10-12, thinking that I won't ever need it again, while laughing at ppl in comments that are using this video as a guide in collage and uni
    Now in second yr of uni, im back to here again cuz I forgot every shit I learnt from my past, and i finally understood why there r so many ppl in here. my professor sucked at explaining the concepts

  • @amit-mishra
    @amit-mishra 3 ปีที่แล้ว +2

    He just knows what we need😭