How to calculate Standard Deviation and Variance

Tutorial on calculating the standard deviation and variance for a statistics class. The tutorial provides a step by step guide.
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[@tekiteeze7128]

THANK YOU, GOD BLESS BROTHER! I pray for whoever reads this to excel through there current math class if you're facing any trouble!! Strive now and shine soon!

[@oliviaso9726]

7 months later: :|

[@RGBY-tv4hg]

You mean to edexel

[@leesworld4541]

Amen

[@leesworld4541]

God bless 🙏 you too

[@ThinkTank438]

Amen !

[@BigBadBurrow]

I think it should have been noted that there are two types of standard deviation: sample and population. The method used here is sample standard deviation because it divides using n-1. Population standard deviation divides using n. Which method used depends on the data being analyzed.

[@RA-sf6np]

BigBadBurrow : thank you! I was confused abt that but thanks to u i understand now :)

[@esther4482]

thank you. I did a practice question and was confused on where i had gone wrong

[@kaylaquach8067]

thanks I was confused

[@nady1963]

@@esther4482 .

[@bhujpur]

Yeah I I came here in the comment section just to read your comment... Problem with n and n minus one

[@jaybee346]

i just learned more in 5 minutes then in my bullshit of a math class

[@jaizipporah9919]

omg I'm not sure why my professor made this seem harder than what it is

[@rukamuko]

Mine 2

[@bighands69]

It can be difficult to explain or it can also be a case that your professor may not actually care.

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omg relatable

[@jcjcjcjcjcufufududuud1657]

Here we take it In grade 9

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I don't even know how else to tell you "THANK YOU" You're my superman... You literally saved my grade 😭😭😭

[@JC-xk8vh]

I found this video a year ago, and here I am again, getting my behind saved by this awesome technique. You Sir are a Legend in my book.

[@charliebrowniest72]

As a mother going back to college in her 40's, I was struggling with Statistics. My college course is online which makes getting help from an instructor very daunting. I appreciate what you do very much! Everything just sort of clicked and made sense while watching your video.

[@WockOps]

how did you do? I hope all went well!

[@name.7463]

Learnt more in 5 minutes than I did in hours of classes... thanks!

[@statisticsfun]

Thanks for the question. The 6 is the number of observations (n).

[@coleklusman9053]

Thank you

[@karinaavazqueztorres4027]

What does that mean?

[@statisticsfun]

Wonderful! That is my goal to help students learn, so I appreciate your comments. Make sure that you like MyBookSucks on FaceBook (see the link in the video description). This will help others find the educational videos, so essence you are helping other students.

[@thestravinsky]

I have been studying for a comprehensive math exam covering algebra to calculus and this is by far the most helpful video I've watched. Excellent job!

[@O_Oxxx]

Great video, one of the very few on youtube that put everything into simpler terms. This was extremely helpful.

[@Jacqueline-bm7di]

Wow! Thank you so much! I have been so confused for the past few days on how to figure out the standard deviation, I knew the formulas and procedures but you just explained it so incredibly clear and patiently. You are so amazing and you get a 10+ rating on teaching, thanks so much for posting up this video. Amazing tutorial!!!! (This is coming from a person whose weakest subject=MATH!).

[@alexdevries1212]

This helped me so much, my professor made it into something 10x harder thank you

[@timelesstovy]

I learned an entire unit in 5 minutes. Short and easy to understand, thank you !

[@cleaningthegutters]

It's been 30 years since my statistics class. I was hoping to refresh my memory so I could help my daughter. I'm going to send her to this tutorial (and any other's you have posted)! So easy to understand. Even your tone of voice says "you can do this!"

[@statisticsfun]

Thanks for you kind words. Good luck to your daughter as well! I have maintained for a long time that statistics is not a difficult subject it is just taught poorly and the resource materials (books) are bad as well.

[@asghernaqvi7916]

thank you so much man! This will help me for the exam!

[@wolfygongora4002]

Great Video lecture... pretty much makes my life easier.. a bit of advice.. Try using a better mic or boosting it .. seriously had to double the audio on my media player to hear you loud enough

[@aneshaberry5901]

This video is 12 years old at this point, yet it helped me sooo much! If you're still out there doing these videos, I just want to tell you thank you! Before than any textbook can explain!

[@majacuic5877]

The best statistics videos on KZbin, it's so easy to understand! Keep up great work :)

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The ad told me to drop out of college...

[@payasolocote7360]

+Thomas Edgerton go ahead bro

[@jtthelion874]

Fuck me i died when i read that phahahahaha for a 2 year old comment that tickled me

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+JJustin what

[@ramithjayasuriya]

hahahahaaaa

[@OppaiGod]

Same

[@Chy_Udeh]

Thank you very much! I never thought I could ever understand the standard deviation this friendly and simple way! Has always been one scary topic for me!! Hugs!!!

[@ebonycat69]

I have learned more in this five-minute video then I learned in whole month of doing Statistics! Thank you for your expertise!👍🏽👏🏾

[@statisticsfun]

I always appreciate hearing that my videos are helpful. Thanks!

[@nataliasayedarous9291]

i was taught a diff way to do this. I really like the way you solved this problem. That i will be using your method. Thank you so much for explaining!!

[@oscarwilde399]

I've been doing stats for years, and I don't think I've ever seen the variance calculation explained so well. Good job!

[@jbeasley0808]

Even 7 years later this is like one of the best videos I've seen about Standard Deviation and Variance, this is really going to help me with my Research Methods and statistics exam, thanks for the video!! Good Job!!

[@cosmosmercy]

I am writing research methods and statistics tomorrow 😊

[@erikalachica2808]

This has helped me in answering a question I didn't know how to deal with. Thank you so much, sir!!

[@statisticsfun]

Thanks for the compliment. I always appreciate the feedback. By the way I am getting ready to load a video about degrees of freedom (n-1) for standard deviation and variance. Make sure if you like MyBookSucks on FaceBook (see the link in the video description). This will help me spread the word about the educational videos.

[@TerryOnDemand]

You Are A Life Saver!!! I was So lost Until this video!!!! Thank You!

[@statisticsfun]

+Latoya Wyatt You are very welcome. Hopefully you will get a chance to like and share the videos. This will help other students find them.

[@sonji1]

+statisticsfun love it but I'm still lost lol

[@KaylaReall]

This really helped me a ton. You made it so easy to understand, in such a short time. Thank you!

[@Pardaillan81]

This is hands down the best video I've seen on the subject. Very well explained and beautifully presented. Thank you very much!

[@adrenalinemadness3340]

OMG thank you, you save me, I have a test in like 10 minutes and didn’t know how to get the standard deviation

[@IrisBeloved]

That was fantastic, so organized and straight forward!

[@lavakushupadhyay8353]

Hii

[@ingridcornejo4515]

Thank you so much!!! the way everything is explained, and simplified is perfect! please keep making these videos you're an awesome teacher!!

[@DaSippPrincess]

Thank GOD for you. A lot of instructors on here assume people remember how to do this stuff. I AM SO HAPPY that I found someone to take me step-by-step. God bless you and thanks :-D

[@sunnygojo]

Thank you so much ! Just understood 3 chapters of work with this lol.

[@pinkyjt123]

that was a really clear and helpful video - i have my geography exam tomorrow! thank you so much :)

[@mduralia]

Excellent job taking some rather complex information that is often confusing the students and putting it into simple terms that are easy to follow and understand. Well done

[@becks_14555]

wow. You showed me more in this short tutorial than my Stats Prof. has in the past 6 weeks ! You're awesome!

[@statisticsfun]

Thanks for for your feedback. The KZbin audience is very diverse and what is required to learn by professors around the world is even more diverse. In this video I try to help students understand how to make this calculation instead of just providing them a formula to plug and chug.

[@thugjuice69]

good video short an sweet to the point good symbology and use of color and charts and all that goooood stuff. thanks. now! off to my finaaal!

[@RandaElsayed]

I never learn statistics with english language until starting Master's degree, then soon I watched your videos I feel like you are the best teacher ever in statistics. I appreciate your work and every single video you did for us.

[@haingurajoseph378]

I never understood this things in university, until I watched this helpful video. Thanks alot

[@didierngombo6960]

Your explaination is so easy to understand. Thanks!

[@statisticsfun]

Didier Ngombo You are very welcome. Hopefully you will like, share, subscribe, If you get a chance could you please like our FB page. www.FaceBook.Com/PartyMoreStudyLess It will help others find the videos.

[@karlitosway7474]

thank you SOOOOO MUCH!! I have a test on this tomorrow and before I saw your video I didn't know jack shit. YOU MY FRIEND ARE A GRADE SAVER :)

[@engr.enciso]

same situation

[@loraphelps4836]

THANK YOU FOR YOUR VIDEO!!! i am in online classes and i was looking through videos that had a breakdown and couldn't find any. Yours was exactly what I was looking for.

[@jhx42x]

Awesome video! I was stuck for 2 hours, saw your video, and pushed ahead.. thanks a bunch.

[@alexredpath-potter861]

You're the real MVP

[@statisticsfun]

Meghan, Yes I do my own animation. I use a variety of different software including photoshop, illustrator, HTML5, Final Cut, GarageBand and a few other products. Each video takes me a long time to create. My rule of thumb is each minute of video takes about 12 hours to create, so a 7 minute video takes me about 84 hours of development time.

[@davebyers4154]

Wow. Well thank you very much for all your hard work! It is well appreciated!

[@jeboyguden4429]

How to get the standard deviation?

[@taurus3065]

This will be a really really helpful video for even more years to come awesome man!

[@PianoChuck]

You're very good at teaching. Thanks for keeping it simple and not all in technical terms.

[@quetzalamaru]

Wow. Please post anything you want. I'll watch it, even if its not my course to learn.

[@PtoArchAngel93]

AWESOME VIDEO!!!!!! excellent thank you so much, please keep doing what you're doing!!!!

[@statisticsfun]

+PtoArchAngel93 You are very welcome Hopefully you will get a chance to share and like the videos. This will help others find them.

[@flyhigh9410]

bro, the voice volume is so down. make it up, plz.

[@willadams8558]

Voice volume is very low in this vid. Headphones are almost required!!!

[@segun927]

Thanks Man. My entire statistics class can't be compared to this 5 mins of simplified explanation. Professor made it like rocket science.

[@the.fitmuslim]

Wow! Amazing and straightforward. In 5 minutes I understood more than 2 weeks with my professor. Thanks!!

[@NickVanzwol]

Color coordinated, great pace, and detailed. This video makes me so hot.

[@jimmyvictor13]

dyyying!!!

[@jerad248]

Loool wtf?!

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This man really got turned on to this😂

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down bad

[@holyknight51]

I am taking AP Statistics this year, i have a feeling i'll be watching alot of your videos.

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[@lavakushupadhyay8353]

Hii

[@flamescaren]

It is very helpful, the info is pretty clear and not overwhelming, straight to the point.

[@AfiOye]

the chart saved my LIFE! Ugh, my professor was just droning on and on. Thank you so much!

[@yungfillly]

neat and simple. i like this. thanks bruh

[@statisticsfun]

rich homie Appreciate that! Hopefully you will like, share, subscribe, If you get a chance could you please like our FB page. www.FaceBook.Com/PartyMoreStudyLess It will help others find the videos.

[@vincentperom2845]

Damn it dude, I love you 3000

[@SUCHARD07]

Finally!!! After watching various confusing explanations about SD and finally found one that is so clear precise tidy and you even paused for thoughts. Thank you so much!!!

[@FeralGhoulash]

This is such a great video. I got injured and missed 3 classes before returning, and this is the best explanation I’ve found!

[@irisrivera2029]

thank you very.. very well explained

[@shellyeditsalot]

writing a test soon? if so, same here. good luck!

[@statisticsfun]

That is a good question. If you go to about 3:36 in the videos where I add up the column of information that equals 166, this is SS or Sum of Squares. Your professor may use a different formula (computational), but it is the same thing. Make sense?

[@unknownn1073]

Thank you so much for this sir, I cried from how relieved I felt to finally understand this.

[@cpinzon85]

THANK YOUUUUU for this video. EXCELLENT. finally understood standard deviation after reading about it for 3hrs. I just understood it in 5min with this video.

[@sandipani333]

Thank you sir Good job . :) :)

[@mskyny2214]

@staisticfun how did you get s=5.74 I got a liitle lost at that part

[@xetmal4125]

Ms Kyny square 33.2 and that’s weee you get 5.74

[@abduljalilaltao3686]

Its 5.76

[@lesleymarygarcia1494]

if i squared 33.2 and i get 1102.24, how do i find the correct answer which is 5.76?

[@nicoleetaylor7649]

Lesley Garcia find the square root of 33.2 not square 33.2

[@AshLonewolf]

Quick and to the point, well illustrated video and very helpful. Thank you!

[@caroljackson767]

Thank you so much for making an otherwise lengthy calculation so much more simple and faster. THANK YOU.

[@amirbagheri100]

Square rot

[@pilot4910]

Ruut *

[@alexandra2671]

Rowt*

[@rylaidarksorrow1021]

RUT*

[@90kapo]

Reot*

[@jogeshkumarsharma2969]

Raaat*

[@GeorgeLee85]

why n-1? There are 6 samples and each have a equal probability of 1/6, why divide by 5?

[@iamyourmama9933]

I was wondering the same thing

[@gabbyrodriguez8977]

+wenhao li It eliminates bias

[@kgomotsegodikago2686]

+wenhao li have seen that in sum vids nd i wonder y eliminate another 1

[@xXxXLoneWolf103XxXx]

Those are the values that are independant of the mean value. Im taking stats right now in uni and by no means an expert. Thats what I've been taught and it makes enough sense to me to know its for good reason

[@soho1080]

The -1 is called losing a degree of observation if you're calculating a SAMPLE variance. If you DO have the entire population, you should/can use n for the population variance.

[@daebelly9844]

Thank you for making this! I find this much easier to understand than almost any other video, which gives almost completely irrelevant instructions or is too complicated and fast for me to understand.

[@SnowStark]

One of the most helpful videos on KZbin!!

[@Mohamedahmed-em2ne]

Who is here cuz tomorrow is exam

[@arsalmairaj5870]

After 1 hour bro 😃

[@organizedmicrowave4414]

20 minutes

[@deshilseelan5075]

​@@organizedmicrowave4414at the exam

[@MoizPlus-1D]

Me

[@Cat-Rain]

me

[@NaughtyNecro]

Be my teacher. Please.

[@Cloverplay]

Thank you so much! This is so much clearer now. I will check out the rest of your videos and probably subscribe :)

[@melissacrow309]

thank u for keeping it simple!!! and it's neat and clean! don't need much volume if you follow the steps...

[@Le_Pidgy]

Maths makes you stay up at night and so does meth. Math=Meth?

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Who's here on 9/13/2108?

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I'm from the future, the KZbin service as you know it was shut down on 7/1/2067

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I'm from further into the future, the KZbin Retro Classic service was started again as an elementary school project in 2096 as people romanticized about the days before instant data sharing across all human brains on the network. Modern (postwar 2077+) humans actually enjoyed the way you primitive humans once spent hours endlessly watching video after video to learn rather than just instantly having the knowledge on demand. They feel like they got a bigger reward from putting in the extra work.

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@@diabetic69 so I don't know what year I'm from, but the earth as you called it is shattering. The people within the ultra neural link have all been corrupted by a virus as seen from the log above me and we, the surviving community of carbon-based humans are slowly dying from the radiation outside. This is Lieutenant Mike signing off.

[@thiengnyamyaath1654]

Since i have been watching online example, this is the only one example I understood better than all, excellent job.

[@Politically-incorrect-brian]

thank you for this awesome video! my professor recommended a different video and I almost dropped the class, then I saw your video and realized how easy it was!!!

[@spectre4962]

HOW THE HECK DO YOU GOT 5.76

[@mona4696]

√33.2

[@hostilityy]

why are you whispering?

[@Le_Pidgy]

ASMR maths

[@CameraCalc]

Thanks, KZbin did truncate the link. I will put a new one up shortly. You are helping a lot of people, please keep doing what you are doing.

[@nicholasdefaria4179]

Very useful and well explained way of calculating standard deviation and variance. Helped me tremendously understand these concepts that my professor made very confusing.

[@leec2101]

great video! so organized and explanatory, I'm going to recommend my professor uses more of your videos!!

[@scarlettmoore8868]

This video was fantastic. I left a lecture today feeling confused as these calculations were not explained properly. This is a lot easier than i thought!

[@cmorr72]

wow, so simple and to the point without all the unnecessary fluff. thank you!!!!

[@prasadupadhyayula8495]

Cool explanation. Nice visual presentation of the substitutions and Computations. Great way of making things simpler and understandable. Thanks a lot.

[@statisticsfun]

Thanks Tom. I always appreciate that my videos are helping students pass their classes. Good luck in your classes too.

[@andersonamara]

Oh my goodness! This was so helpful! Thanks so much! I have my first college exam tomorrow in Stats and was freaking out because I didn't understand standard deviation! Sir, you deserve an award!

[@johnstewart8325]

So much help. Great video, talented teacher. Much more simple than I thought, it just clicked

[@rednidi3]

This just taught me better than a 50 minute lecture did. THANK YOU LIFESAVER!

[@windyblue7943]

Goshhhhh! This really made my day. Monday morning!!! I watched many videos including my lectures but still couldn’t understand :((((((((( Thank you very much! It’s very crystal clear!!!

[@scoopmaster69]

Thank you so much! You're the reason I'm gonna get an A in stats this semester!

[@marelyruiz1321]

I loved it, it's a really good video. It's clear and straight to the point. Thanks a lot for a job well done :)

[@rachelehm]

I am taking statistics online to finish the pre-reqs I need to get a higher-level nursing degree. After wrestling with a homework assignment, I sought youtube assistance and this was the first video I watched, which simplified it and made it seem do-able. Thank you for posting this! I appreciate it so much!

[@statisticsfun]

Rachel Mitchell Thank you Rachel for taking the time to write me. Online classes can be a real struggle. I am happy to hear my videos are helping you. Let me know if there are additional topics you wished I had videos for. It will help guide me, so I can help other students with their online classes. Good luck in your online class too.

[@salnaud8898]

Appreciate the simplicity has been used in your videos.