absolutely brilliant! The simplest and clearest explanation yet, without starting with the equations too which just confuses people! You're a genius! Thanks
really? just 5:20 minutes to explain variance and standard deviation, and on top of that he explained information that made the comprehension of the meaning of the formula much clearer, so much that if somebody forgets the formula, he may recall it quite easily. Thank you!
Awesome! This video is perfect on each level. You speak loud and clear, Explanation are perfect, The video devided to topics. Thank you for your effort!
This is so very helpful. I love how you stated why we should use std deviation when finding the spread. And also, how you related it to the data set. Well-done!
Finally a video answering my question in a straight forward manor. What I'd struggled to get a clear explaination on was both interpreting the variance/St dev as well as what there significance was relative to the average.
Well explained. I am working on spatial analysis of variance of climate datasets, this video helped me to clearly understand what variance is and where to apply!
i wanna say thank you so much that im crying because now i really know what variance and standar deviation is😭😭😭✨✨✨ your explanation is everything! this helps me a lott!
Thank you so much! I have a machine learning and artificial intelligence module in university and I did not take focus on maths as one of my modules before university so I was really confused when I first encountered it. This helped me understand it a lot and you talk very clearly and concisely.
Question: Why variance? I understand why Standard Deviation, but how does using variance clarify our data for interpretation? Thank you for the great video.
You're right I've been searching for an explanation to this without finding a clear answer, I only found out that the Mean Absolute Deviation is more inituitive measurement of spread for me...
@@tahaanouar2453 ive found the answer, variance is needed because further in statistics the variance should be the same between multiple variables. (variables that you set up against eachother) if one variance is bigger then the other your fucked. So for now remember that this is something for example a anova test.
Why do we subtract 1 from the total data points (this is done at 2:11)? Why is it not just dividing by the total data points? That doesnt make sense to me when its in regards to an average so would love to understand (unless it has to do with us indexing starting at 0 rather than 1 or something?)
You're right but it's a little more complicated than that. The variances of independent variables can be add up, but the standart deviations can't (because when we take the root of each variance individually and then sum them up we get a biased result) Also the variance has plenty of mathematical uses, which the standart deviation can't achieve. Hope this helped
That is one definition of The Variance; here is mine: it is the rule by which one dimensional scalar data is converted to two dimensional data to map one dimensional (linear) data into two dimensional (probability) space. It is based upon geometry and Pythagorean Theorem. Does that make sense? Here is another definition: it is a square in imaginary space, the area of which is the sum the areas of all the individual variances, and it is a two dimensional probability space. We calculated it was integration. We can reduce the space from two dimensions into one by taking the square root of that scaler. That is the standard deviation. The standard deviation is the square root of the variance. 2:48: 28.4 is the radius of the circle in the space that was constructed from the data. It is the hypotenuse of a triangle that was constructed by adding the “Areas of Deviance” from the data points. 3:00 Because the Variance is the hypotenuse of a triangle that was constructed from the products of right triangles, we may use The Pythagorean Theorum to calculate its length by finding the square root. YW! Upvotes please!
@@Sam-vz8gn I made a mistake! It is the standard deviation that is the hypotenuse: The standard deviation is the square root of the variance! I am in the process of re-writing my post until further notice…
It is really helpful for me thanks a lot... Keep making videos in statistics for us in series according to the chapter. And please if you have already prepared the videos on it kindly share me the link. I need videos on: 1. Time Series, 2. Stationary Process and ARIMA Models, 3. Exponential Smoothing Models 4. ARCH/GARCH Models 5. Introduction to Artificial Intelligence 6. Application of AI 7. Introduction to Deep Learning 8. Artificial Neural Networks 9. Convolutional Neural Networks 10. Deep Learning Applications 11. Reinforcement Learning 12. Image Recognition using Deep Learning 13. Image Recognition using Deep Learning Thanks
Hi, i have a line of data which consists of these numbers {4, 3, 5, 6 ,4, 5, 7,6,5,4} and i have Mean = 4,9 and the variance of 1.4333. My question is, is this variance considered high or low ?
Really good video. One question. When can we say that the variance is low or high? is there any kind of global value to refer to the data when the variance is low or high? Really good video.
absolutely brilliant! The simplest and clearest explanation yet, without starting with the equations too which just confuses people! You're a genius! Thanks
super clear. to the point. no excess details! just perfect pace, flow, and details, wow!
really? just 5:20 minutes to explain variance and standard deviation, and on top of that he explained information that made the comprehension of the meaning of the formula much clearer, so much that if somebody forgets the formula, he may recall it quite easily. Thank you!
Awesome!
This video is perfect on each level.
You speak loud and clear,
Explanation are perfect,
The video devided to topics.
Thank you for your effort!
This is so very helpful. I love how you stated why we should use std deviation when finding the spread. And also, how you related it to the data set. Well-done!
One of the best explanations of variance I've ever seen.
Thanks a lot. You are a great teacher sir. So easy to understand. Do keep sharing. You are helping people at large and contributing to their success.
My guy did something in 5 mins that my uni teacher couldn't do in 3 months🤣❤
Thank you 🙏 you explained it a thousand standard deviations better than my professor. You're a life saver!
Finally a video answering my question in a straight forward manor. What I'd struggled to get a clear explaination on was both interpreting the variance/St dev as well as what there significance was relative to the average.
These are great videos you're doing here. I just started an online statistics course and your explanations have been helping out a lot! Thanks!
Thank you for making a video that was so easy to understand that i was able to watch while trimming my armpit hair
My man explained the concept so simplistically, that I feel dumb to not understand this concept earlier!!
Well explained. I am working on spatial analysis of variance of climate datasets, this video helped me to clearly understand what variance is and where to apply!
i wanna say thank you so much that im crying because now i really know what variance and standar deviation is😭😭😭✨✨✨ your explanation is everything! this helps me a lott!
Thank you very much, with your videos I have been able not just to understand, but also to love more statistics.
:) Greetings from Mexico.
Excellent! Thanks for the feedback Frida
Thank you so much! I have a machine learning and artificial intelligence module in university and I did not take focus on maths as one of my modules before university so I was really confused when I first encountered it. This helped me understand it a lot and you talk very clearly and concisely.
Thank you!🙏 this is the best explanation out there
love these kind of tutorials
Crisp and clear explanation...
thank you so much bro that was really clear. good job
You're welcome!
Clear and concise, great video!
Thanks for the feedback
Question: Why variance? I understand why Standard Deviation, but how does using variance clarify our data for interpretation? Thank you for the great video.
i have the same question, i cant find it anywhere on the internet
You're right I've been searching for an explanation to this without finding a clear answer, I only found out that the Mean Absolute Deviation is more inituitive measurement of spread for me...
@@tahaanouar2453 ive found the answer, variance is needed because further in statistics the variance should be the same between multiple variables. (variables that you set up against eachother) if one variance is bigger then the other your fucked. So for now remember that this is something for example a anova test.
If u get, answer plz
@@santoshkhadka7916bro this was 2 years ago😭
This was so clear. Super helpful. Thank you!
Why do we subtract 1 from the total data points (this is done at 2:11)? Why is it not just dividing by the total data points? That doesnt make sense to me when its in regards to an average so would love to understand (unless it has to do with us indexing starting at 0 rather than 1 or something?)
Oh nevermind - just got to the end of your video where you explained it with Bessel's correction due to a possible bias. Thank you!
Cheers. It is very helpful (simple, neat, and elegant)
Thank you! I understood every word!
Thanks for the very clear explanation.
Essentially variance’s only use is to calculate standard deviation, which is actually helpful to interpret data 😂
HAHAHA THIS IS THE CONCLUSION THAT I HAVE ARRIVED TO
Right?!
Literally 😂
You're right but it's a little more complicated than that.
The variances of independent variables can be add up, but the standart deviations can't (because when we take the root of each variance individually and then sum them up we get a biased result)
Also the variance has plenty of mathematical uses, which the standart deviation can't achieve.
Hope this helped
It’s also used when determining standard error, which is used for determining margins of error.
Thank you for the Beautiful video 😊
That is one definition of The Variance; here is mine: it is the rule by which one dimensional scalar data is converted to two dimensional data to map one dimensional (linear) data into two dimensional (probability) space. It is based upon geometry and Pythagorean Theorem. Does that make sense?
Here is another definition: it is a square in imaginary space, the area of which is the sum the areas of all the individual variances, and it is a two dimensional probability space. We calculated it was integration.
We can reduce the space from two dimensions into one by taking the square root of that scaler. That is the standard deviation. The standard deviation is the square root of the variance.
2:48: 28.4 is the radius of the circle in the space that was constructed from the data. It is the hypotenuse of a triangle that was constructed by adding the “Areas of Deviance” from the data points.
3:00 Because the Variance is the hypotenuse of a triangle that was constructed from the products of right triangles, we may use The Pythagorean Theorum to calculate its length by finding the square root.
YW! Upvotes please!
How would to represent variance using a two dimensional graph & what would it represent? How would it be different from that of Standard deviation?
@@Sam-vz8gn I made a mistake! It is the standard deviation that is the hypotenuse: The standard deviation is the square root of the variance!
I am in the process of re-writing my post until further notice…
Amazing!! Lovely explanation.
incredible, thanks a lot
Very well explained. Finally understand!
Simple and clean, thanks
Thank you so much for this video! It is just perfect!
Good explanation
Would be better if you could include maybe 3 to 5 examples so we have a better sense of how it works
Super cool explanation !!!! Thank you!
Thank you. I understand so well the concept.
Massively helpful thank you
It is really helpful for me thanks a lot...
Keep making videos in statistics for us in series according to the chapter.
And please if you have already prepared the videos on it kindly share me the link.
I need videos on: 1. Time Series,
2. Stationary Process and ARIMA Models,
3. Exponential Smoothing Models
4. ARCH/GARCH Models
5. Introduction to Artificial Intelligence
6. Application of AI
7. Introduction to Deep Learning
8. Artificial Neural Networks
9. Convolutional Neural Networks
10. Deep Learning Applications
11. Reinforcement Learning
12. Image Recognition using Deep Learning
13. Image Recognition using Deep Learning
Thanks
Awesome nicely explained ❤❤
very informative sir, thank you
Awesome video thanks for the video, dear! 😎
Amazing, thank you so much
Hello. Great video. I am curious what benefit using variance has over standard deviation. In what situation would I use variance instead? Thank you
Hi, i have a line of data which consists of these numbers {4, 3, 5, 6 ,4, 5, 7,6,5,4} and i have Mean = 4,9 and the variance of 1.4333. My question is, is this variance considered high or low ?
Amazingly explained.....
Thank you very helpful
Finally! Statistic basics, where I doesn't fall asleep.
Whey we need variance and where do we use ? Please explain. It was good explanation.
thanks and well explained
Concise and complete
Thanks,so clear(:
nicely explained
Thank you ❤
Really good video. One question. When can we say that the variance is low or high? is there any kind of global value to refer to the data when the variance is low or high?
Really good video.
wow, super clear.
Tq sir very good explanation
Thanks awesome explnantion
So fucking good, never stop
First of all, great video. Second, can u please explain why we get ZERO if we don't square. Thanks 😊
Very well expained
Thanks :)
@@StevenBradburn no, Thank you.
Why we have to square negative figures to get variance?
THANK YOU!
Very welcome
Amazing!!!!
Just awesome!
thank you!!!
What is the value of Standard Deviation were the observations are the lengths in days of the 12 different months in a leap year ?
great video
thats great... thanks.
excellent
The “n” of the population variance should be “N”
thank you
Thanks
I don't know how many ways there are to calculate the variance but I calculate it by (EX^2-(EX)^2/N)/N
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Supposed to be divided by 6?
Is there a easier way to get 5he variance
Is there a easier way to find the variance
Tnx
fuck me this is the clearest thing I think I've ever watched thank you!!
Are the data points really obtainted from a sample population ? Why did he consider all the data sets in that case?
please tell couldn't we have just taken sum of absolute values rather squaring them
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I don't understand one thing .......why should we square the values that we have subtracted from mean.........I am tense about this question
If you don't square, the sum would be zero. To avoid that we square and add them
@@harisudhan8481 Yeah your right....!
@@harisudhan8481 But can't we take values as it is!!??
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king
Why did you minus 1 from 6 when there is 6 points
I thought he said 🦆 🦆 ducks.
Then I realized he said 🐕 🐩 dogs.
This type of explanation, I called them " BULLSEYE EXPLANATION " !!
Variance ---> SD ---> SE
Welcome
But why n-1.
cuz the mean has been subtracted from each value, so one less value.
Degrees of freedom
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I'd not understand about standard variance
Jay Pillai gang
Why 6-1
sample variance = n-1, population variance = n
hej
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