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

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  • Опубликовано: 11 фев 2017
  • This statistics video tutorial explains how to use the standard deviation formula to calculate the population standard deviation. The formula for the sample standard deviation is also provided. This video shows you the variables associated with the sample mean and the population mean. In addition, it discusses how to calculate variance from standard deviation.
    Introduction to Statistics:
    • Introduction to Statis...
    Arithmetic, Geometric, & Harmonic Mean:
    • Arithmetic Mean, Geome...
    Cumulative Relative Frequency Table:
    • How To Make a Cumulati...
    Quartiles, Deciles, & Percentiles:
    • Quartiles, Deciles, & ...
    Interquartile Range & Outliers:
    • How To Find The Interq...
    ___________________________________
    Skewness & Symmetric Distribution:
    • Skewness - Right, Left...
    Sample Mean and Population Mean:
    • Sample Mean and Popula...
    Mean, Median, & Mode - Grouped Data:
    • Mean, Median, and Mode...
    Standard Deviation:
    • How To Calculate The S...
    Variance:
    • How To Calculate Variance
    ___________________________________
    Mean Absolute Deviation:
    • Mean Absolute Deviatio...
    Standard Deviation of Grouped Data:
    • How To Calculate The S...
    Introduction to Probability:
    • Introduction to Probab...
    Probability Formulas:
    • Probability Formulas, ...
    Final Exams and Video Playlists:
    www.video-tutor.net/

Комментарии • 395

  • @TheOrganicChemistryTutor
    @TheOrganicChemistryTutor  7 месяцев назад +7

    Final Exams and Video Playlists: www.video-tutor.net/
    Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections

  • @wrjazziel
    @wrjazziel 3 года назад +523

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

    • @ayeshakoser5831
      @ayeshakoser5831 Год назад +9

      Same here😂😂

    • @mmhh3553
      @mmhh3553 Год назад +4

      Me too 😂😂😂😂

    • @alessandrozito7047
      @alessandrozito7047 Год назад +11

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

    • @chelsiiiwhoo4030
      @chelsiiiwhoo4030 Год назад +8

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

    • @alvinbett111
      @alvinbett111 Год назад +1

      Same

  • @elizabethkain75
    @elizabethkain75 2 года назад +325

    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 Год назад +8

      uni and college sets students up for failure tbh

    • @lukekrawiec3522
      @lukekrawiec3522 11 месяцев назад

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

    • @lk6977
      @lk6977 11 месяцев назад

      @@lukekrawiec3522 yes?

    • @thegreatpapyrus3644
      @thegreatpapyrus3644 9 месяцев назад

      why? is there something wrong?
      @@lukekrawiec3522

    • @blossomluvsu9
      @blossomluvsu9 8 месяцев назад +3

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

  • @soha1301
    @soha1301 3 года назад +75

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

    • @soha1301
      @soha1301 2 года назад

      @@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 года назад

      same scene as mine 😂😂

    • @Svelasc2
      @Svelasc2 Месяц назад

      SAME!

  • @carlettaknoxseymour4406
    @carlettaknoxseymour4406 Год назад +70

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

  • @wc4201
    @wc4201 Год назад +34

    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.

  • @war_correspondent
    @war_correspondent Год назад +26

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

  • @josuecarlos6941
    @josuecarlos6941 6 лет назад +133

    Long life for this channel!

  • @dignanavida5948
    @dignanavida5948 5 лет назад +15

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

  • @xvingar6318
    @xvingar6318 Год назад +4

    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

  • @jasonsusayajps3187
    @jasonsusayajps3187 3 года назад +25

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

  • @LauraTeAhoWhite
    @LauraTeAhoWhite 3 года назад +5

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

  • @BMSKARATE
    @BMSKARATE 2 года назад +56

    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 года назад +1

      hi

    • @HustlerEli
      @HustlerEli Год назад +2

      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)

  • @flaxschoolacc1193
    @flaxschoolacc1193 Месяц назад +1

    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

  • @lisanguyen2397
    @lisanguyen2397 4 года назад +4

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

  • @UberPretzel101996
    @UberPretzel101996 5 лет назад +13

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

  • @sabathilegumbi1691
    @sabathilegumbi1691 3 года назад +6

    I always find his videos helpful. Thank you so much

  • @user-xz2lz8ki5u
    @user-xz2lz8ki5u Год назад

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

  • @aussielife4604
    @aussielife4604 4 года назад +46

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

  • @cindylee1965
    @cindylee1965 3 года назад +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

  • @sspah6870
    @sspah6870 Год назад +4

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

  • @rudyperez2542
    @rudyperez2542 5 лет назад +4

    Just wow dude! great job!. simple to understand. thank you very much

  • @lauramartinez7009
    @lauramartinez7009 6 лет назад +34

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

  • @jasminetaul3779
    @jasminetaul3779 4 месяца назад +3

    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

  • @corinnemcconnaughy3996
    @corinnemcconnaughy3996 2 года назад +10

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

  • @mariacurotto2283
    @mariacurotto2283 4 года назад +3

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

  • @jeremyk7378
    @jeremyk7378 5 месяцев назад

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

  • @rimangharazeddine2573
    @rimangharazeddine2573 2 года назад

    Thank you. You made this operation worked out by using simple definitions for each term ,which by the way, I have not seen that happening in the guide books. So, thanks.

  • @BeNothingg
    @BeNothingg 2 года назад +6

    I have an exam today 🙃

  • @andrewvasquez7141
    @andrewvasquez7141 6 лет назад +33

    This guy is the best I swear!

  • @kristylisak.3310
    @kristylisak.3310 9 месяцев назад

    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!

  • @phillipsithole7275
    @phillipsithole7275 5 лет назад +18

    Moderate voice, standard explanations...everything perfect

  • @siyabulelampinge564
    @siyabulelampinge564 2 года назад

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

  • @tymothylim6550
    @tymothylim6550 3 года назад +2

    Thank you very much for this video :) It was clear and easy to follow.

  • @jilianbarganier1383
    @jilianbarganier1383 2 года назад +1

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

  • @venessoko1932
    @venessoko1932 4 года назад

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

  • @ian8879
    @ian8879 5 лет назад +11

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

  • @spiderace7994
    @spiderace7994 3 года назад

    You are a hero for all people with math help!

  • @mathhelpmadeeasy
    @mathhelpmadeeasy 2 года назад

    Fantastic video for Finding Standard Deviation in Statistics! Thank you!

  • @aragar8920
    @aragar8920 3 года назад +1

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

  • @sizuchii
    @sizuchii 3 года назад +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.

  • @veranikakvitko9632
    @veranikakvitko9632 6 лет назад +2

    this is very helpful, everything is explained very simply. subbed

  • @theheartofart_rm5024
    @theheartofart_rm5024 Год назад

    It's really helpful and explanation is superb ! You just made the topic very easy to understand. Thank u

  • @hathu5060
    @hathu5060 5 лет назад +5

    hopefully there are gonne be more videos on statistic tutorial

  • @michellestolzenburg3062
    @michellestolzenburg3062 6 лет назад +2

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

  • @alaurenfuentes
    @alaurenfuentes 2 года назад +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

  • @jennifersawyer6657
    @jennifersawyer6657 2 года назад

    Thank you soo much for breaking it down for me. My book, nor my professor provided this specific information.

  • @gmj2025
    @gmj2025 Год назад

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

  • @tabethchatyoka1016
    @tabethchatyoka1016 Год назад

    Thank you soo much this was brief and straight to the point 🎉

  • @osofoxleyoxley4093
    @osofoxleyoxley4093 4 года назад +1

    Thank you! So helpful.

  • @danplaysgames2666
    @danplaysgames2666 8 месяцев назад

    I like the way you simplify it. Thank you.

  • @claudiamesaaparicio8517
    @claudiamesaaparicio8517 4 года назад

    THANKS FOR YOUR VIDEOS, ALL OF THEM!!!!

  • @nidaali1637
    @nidaali1637 5 лет назад

    Long live this channel and prosper . easiest help possible

  • @jmoneyswag7815
    @jmoneyswag7815 Год назад

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

  • @ashelymwinga1375
    @ashelymwinga1375 2 года назад

    Well and simply explain, My best online tutor.

  • @lilly6805
    @lilly6805 Год назад

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

  • @wiggl3s_821
    @wiggl3s_821 Год назад

    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)

  • @victoriazhang9691
    @victoriazhang9691 7 лет назад

    Thank you!!! Much appreciation for your work

  • @obadiahsombe6884
    @obadiahsombe6884 3 года назад

    Absolutely commendable.....God bless you

  • @boderimamman7762
    @boderimamman7762 5 лет назад

    please explain harder questions on the topic. Thanks for your patronage, it helping many of us. Infant any time I login to RUclips I only look for your solutions only if I don't see yours there.

  • @mputaostin3077
    @mputaostin3077 2 года назад +1

    Thanx for the demonstration message be blessed

  • @thecoffeebadger5807
    @thecoffeebadger5807 Год назад +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.

  • @muhammadyousufkhuram4936
    @muhammadyousufkhuram4936 Год назад

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

  • @asiaasia9133
    @asiaasia9133 2 года назад

    You explained so perfectly jazakallAllah 🥰 sir

  • @redbutterflyinspo4654
    @redbutterflyinspo4654 3 года назад +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

  • @gileamburce1315
    @gileamburce1315 Год назад +1

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

  • @PallyGonzalez
    @PallyGonzalez Год назад

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

  • @xocaroline0
    @xocaroline0 2 года назад

    Thank you so much,I have understood this clearly🥺❤❤

  • @nozimasobirova4300
    @nozimasobirova4300 4 года назад +9

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

  • @broncooccelien2946
    @broncooccelien2946 5 месяцев назад

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

  • @sk-it-nb6434
    @sk-it-nb6434 4 года назад

    Thanks for making this video this helped me alot

  • @feranmioladipo
    @feranmioladipo 9 месяцев назад +2

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

  • @DUMITRUANDREEA-GEORGETA
    @DUMITRUANDREEA-GEORGETA Год назад

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

  • @Our.nostalgia657
    @Our.nostalgia657 2 года назад +1

    Thank you professor, currently busy witha an assignment.

  • @Yuvastanza
    @Yuvastanza 4 года назад +1

    You are awesome, please help us understand the "Root of" calculation in simple method

  • @mikeugarte5351
    @mikeugarte5351 4 года назад +1

    dude this account legit saved my life

  • @_av8
    @_av8 Год назад

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

  • @user-rm8cm4xc9k
    @user-rm8cm4xc9k 7 месяцев назад +1

    You have a good method of delivering lectures

  • @yoapedraza1928
    @yoapedraza1928 2 года назад

    You are the best!! Thank you so much 🙏🙏🙏

  • @hannahjuliagonzales6950
    @hannahjuliagonzales6950 3 года назад +2

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

  • @LindtLain
    @LindtLain 2 года назад

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

  • @110SSR
    @110SSR 7 лет назад +2

    Simple and Clear

  • @Abby-hr8im
    @Abby-hr8im 4 года назад +11

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

  • @mohammadazimpoyan2386
    @mohammadazimpoyan2386 3 года назад

    Very Helpful Thanks!

  • @givenpuje6106
    @givenpuje6106 Год назад

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

  • @mahathirhossain8526
    @mahathirhossain8526 2 года назад

    this guy deserves everything

  • @Idkbro298
    @Idkbro298 3 года назад

    This video helped me a lot!!

  • @matsen2c5-1
    @matsen2c5-1 Год назад

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

  • @anandanhumanoid
    @anandanhumanoid 6 лет назад

    nice had a good recap.. thank you

  • @peterpace3379
    @peterpace3379 5 лет назад +19

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

    • @cacalightx
      @cacalightx 7 месяцев назад

      yo how did your jee go

  • @love_jjk
    @love_jjk Год назад

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

  • @vvinterwitch
    @vvinterwitch Год назад

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

  • @AliHadi_
    @AliHadi_ Год назад

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

  • @wandipebenny5597
    @wandipebenny5597 2 года назад

    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 🙏🏿💔🙏🏿

  • @muhammadmubasit7830
    @muhammadmubasit7830 Год назад

    this has helped me alot thanks man

  • @HullBoy-ld6nf
    @HullBoy-ld6nf 2 года назад

    Thanks! I got a quiz on this tomorrow!

  • @ediblerice912
    @ediblerice912 3 года назад

    You're the hero we need

  • @hinokiband7288
    @hinokiband7288 Год назад +2

    Taught me more than the whole 45 mins math class today .Thank you

  • @lovesicktrick
    @lovesicktrick 2 года назад +18

    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 года назад +7

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

  • @ikishabrothers6719
    @ikishabrothers6719 6 лет назад +1

    Very helpful!