Standard Deviation Formula, Statistics, Variance, Sample and Population Mean
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-tuto...
Пікірлер: 399
Final Exams and Video Playlists: www.video-tutor.net/ Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections
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
Жыл бұрын
uni and college sets students up for failure tbh
@lukekrawiec3522
Жыл бұрын
im sorry, you do this in college???????
@lk6977
Жыл бұрын
@@lukekrawiec3522 yes?
@thegreatpapyrus3644
10 ай бұрын
why? is there something wrong? @@lukekrawiec3522
@blossomluvsu9
9 ай бұрын
COLLEGE?? bro im struggling with this at 12 years old 😭
I come to this channel for everything I don't understand from my University professors
@ayeshakoser5831
Жыл бұрын
Same here😂😂
@mmhh3553
Жыл бұрын
Me too 😂😂😂😂
@alessandrozito7047
Жыл бұрын
University? I’m learning this in grade 10 yeah buddy your probably in the American school system that’s why
@chelsiiiwhoo4030
Жыл бұрын
@@alessandrozito7047 statistics isn’t mandatory in the US but you CAN take it and higher in our high schools.
@alvinbett111
Жыл бұрын
Same
Im crying.. 😭 you explained me something so perfectly my professor couldn't .. thank you soo much 🌹💯👏
@soha1301
2 жыл бұрын
@@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
2 жыл бұрын
same scene as mine 😂😂
@Svelasc2
2 ай бұрын
SAME!
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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.
I know there's someone here looking for better teacher than in our online class teacher this pandemic. 😁
You just helped me summarized my 6 months class in 10 mins. This morning I got final, thank you so much!
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
Long life for this channel!
Thank you, you’re actually better than a university lecturer. Crazy!
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
2 жыл бұрын
hi
@HustlerEli
Жыл бұрын
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)
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I have an exam today 🙃
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@kelseyfuglestad2593
4 жыл бұрын
Definitely me right now
@reanna5158
4 жыл бұрын
prepping 12 hours before... yikes
Your videos help me, you are much clearer explaining these problems than my professor and textbook
Moderate voice, standard explanations...everything perfect
@cameronreyno7175
3 жыл бұрын
Yeah this guy is fantastic
Really love your voice and your explanations are always on point! Good job! Happy that I found your channel.
I’ve had the flu and missed classes this week thank you sir for helping me catch up.
Your voice is so tranquil and your breakdown is so easy to understand
Thank you. You are literally covering almost all the course modules in my university life...
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
I always find his videos helpful. Thank you so much
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
2 жыл бұрын
I believe it's Because We are using the Population instead of a sample
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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.
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Thank you for the most understandable explaination. I understand literally NOTHING of what my prof said in the class. YOU ARE MY LIFE SAVER.
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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
2 жыл бұрын
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! kzread.info/dash/bejne/c4KnuNGdf9iXhMo.html
@wiggl3s_821
Жыл бұрын
I also thought this, is this a mistake?
@muahna15
8 ай бұрын
he just did the population standard deviation and not the sample. The sample formula is with n-1
Thanks a lot, super concise and clear, you're a blessing man.
bro you are so good!!!! you are saving my life right now!!! THE REAL MVP!!!
A big thanks to you, this really really helps alot, i understand this lecture alot more than my Math teacher...
thanks for your explanations! you've made online statistics so much easier to learn!
How I would know if it sample deviation or population deviation if it doesn't mention that in the question
@wm511
5 жыл бұрын
Good question! If they never mention the word sample or population in the question, always assume it is a population either way the answer will be the same for both at the end!
@princessnaaofeibeaquarcoo3091
4 жыл бұрын
If it never mentioned it is the population standard deviation
@minnicute2497
4 жыл бұрын
@@princessnaaofeibeaquarcoo3091 Are you sure
@hopeperalta7382
4 жыл бұрын
The video is cutting off, I can not hear well, it cuts off.
@vanessajohnson3952
3 жыл бұрын
In the clinical laboratory we use sample deviation, not population. 20+ years ago I was only taught sample deviation. The population deviation will be slightly lower than the sample deviation. In most cases it would not matter which one you used, however, there may be some cases where it does change how you would round the standard deviation.
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shouldnt it be (n-1) for the denominator instead of just n
You are a hero for all people with math help!
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!
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this is very helpful, everything is explained very simply. subbed
You have a good method of delivering lectures
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hopefully there are gonne be more videos on statistic tutorial
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@cacalightx
8 ай бұрын
yo how did your jee go
the comments on math videos are always positive. and like: this video taught me in minutes what teacher couldn't in weeks😁😁
Thank you professor, currently busy witha an assignment.
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Thank you bro, missed 2 weeks of class and this is saving me.
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seriously thank you so much, all my professor did was the way to find standard deviation is just do this equation here .
Well and simply explain, My best online tutor.
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So basically the variance formula is same as the STD without the square root. thanks a lot buddy.
@asdfghjkl-vq2qz
4 ай бұрын
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
4 ай бұрын
@@asdfghjkl-vq2qz I can help you
Wonderful video thanks for such a helpful video. And thanks to a teacher who helps their students in.
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
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.
I like the way you simplify it. Thank you.
Thank you soo much for breaking it down for me. My book, nor my professor provided this specific information.
Thank you very much for this video :) It was clear and easy to follow.
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Thanx for the demonstration message be blessed
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I needed this when I took statistics
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My favorite math youtuber
My favorite channel,therefore every video that I watched makes sure subscribe and give thumbs up to appreciate him..top
Thanks for the video, I literally thought regular standard deviation was the same with Population and sample deviation
Taught me more than the whole 45 mins math class today .Thank you
Thank you really helpful, my professor forgot to upload the lecture video for the hw due in a few hours
thank you very much you have no idea how much you are helping me
You're so Generalist to explain about all science disciplines briefly
Quick question, you mentioned that with sample standard deviation you do N - 1 which you didn't end up doing in the end of video. (8:30)
@muffinnit
Жыл бұрын
because it is the same process except you do n-1 instead of only dividing sum to n
Fantastic video for Finding Standard Deviation in Statistics! Thank you!
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 🙏🏿💔🙏🏿
Can you please make a Statistics playlist? I’d like to study it over winter break because I’m terrible at math & I’m not sure on the topics that Stats go over
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