A few corrections - 4:29 - it's 1152, not 1154...have done calculations with 1152 ,but written 1154 by mistake !! Something you should avoid 😅 5:30- variance is 160,not 180 !! Standard deviation is 12.64
Hey this was one of the best videos on Standard Deviation on TH-cam, straight to the point, fantastic super clear and simple representation and excellent explanation!! kudos to you!!!
@EnjoyMath When you are calculation St. Deviation how do you determine your denominator? Can you please explain when we are to use St. Deviation formula of sample data (n-1) vs St. Deviation formula of population data ? Thank you for your time!
Yes, there are 2 formulae....population data means we know all the actual data and actual mean value...then we can use denominator as n. However, if there is any real life data, it is impossible to get the complete picture, we can only take a sample,that is sample data...then we keep denominator as n-1..... I think it should be mentioned in the question if it is sample data or population data for us to decide which formula to use..pls let me know if u have any questions
I have been really struggling as my lecturer only posts videos and is very rarely online to talk to, you have shown me exactly how to do it so much quicker
@@EnjoyMath Mam I have a request to you, please upload the full videos of probabilities theorem: Binomial, Poison, Normal . I will be very helpful in uploading this video. I can't understand from book at all. Please mam, this is my humble request to you 🙏🙏🙏🙏
Thank you so much for the appreciation!! Yes, the denominator is different depending on if the data is sample data or population data. population data means we know all the actual data and actual mean value...then we can use denominator as n. However, if there is any real life data, it is impossible to get the complete picture, we can only take a sample,that is sample data...then we keep denominator as n-1..... I think it should be mentioned in the question if it is sample data or population data for us to decide which formula to use..however my observation is that for grade 11 cbse ncert ,they have used denominator as 'n'. pls let me know if u have any questions
Even If sum of frequency is less than 30 , there should not be any change in the method....if possible,can u pls give some more information abt the question?
maam also u didn't if its data sample or population sample...bcz in data sample we denote the deviation by S...if im not wrong...just first day of my study so
Yes, this is population data, not sample data, sorry abt not mentioning....in many books i have seen formula for population data and in many other books formula for sample data being used... Are both formulae being taught in your grade?
The process is right but there is some mistake in the calculation. The second value of fixi is 1152 and the standard deviation should be 12.64. Thank you
Hello, I have checked all the calculations....the fixi values are fine, the last step division is incorrect , 8000/50= 160, not 180.... Pls note, thank you 👍👍👍
Yes, there are 2 formulae....population data means we know all the actual data and actual mean value...then we can use denominator as n. However, if there is any real life data, it is impossible to get the complete picture, we can only take a sample,that is sample data...then we keep denominator as n-1..... I think it should be mentioned in the question if it is sample data or population data for us to decide which formula to use..pls let me know if u have any questions
Number of frequency means total number of frequency...and that is the same as sum of frequency...and they are denoted by the letter 'N'.....pls let me know if you have any questions.....
Your answer is wrong .. there will be 800/5 = 160 not 180... Please do the calculation correctly many of the students are watching u .. pls don't confuse them .... 🎉. Please make the corrections
@@RahulKumar-vv4fq you are right, pls check my pinned comment.... It's a calculation mistake I realised after uploading the video, so we cannot clip out a video portion and put the correct clip once it's uploaded.... Hence I have put a pinned comment...yes, since this mistake, I am trying my level best to do multiple rechecks before publishing any video.... But again,I agree I am not perfect... 🙏🙏🙏🙏
A few corrections -
4:29 - it's 1152, not 1154...have done calculations with 1152 ,but written 1154 by mistake !! Something you should avoid 😅
5:30- variance is 160,not 180 !!
Standard deviation is 12.64
Also 8000/50=160 not 180
Yes,it's mentioned in the pinned comment 👍
Right
No problem ma'am.. these errors are really very small in comparison to your effort in making the concept crystal clear 😊
@samriddhisagun7163 thank you so much for that comment full of encouragement!! Really means a lot 😊😊👍👍👍
Couldn’t understand anything from others but this video helped me a lot, very fantastically explained and straight to the point
It's awesome to know that video has helped u !! Thanks so much for the lovely feedback 😊😊👍👍👍
Hey this was one of the best videos on Standard Deviation on TH-cam, straight to the point, fantastic super clear and simple representation and excellent explanation!!
kudos to you!!!
Thanks a million for the wonderful comment!! Glad to be of help....Really,comments like yours motivate me to try my best !! 👍👍👍👍😊😊
This is my 4th continuous video that I watched... wonderful work ma'am.. keep helping us by uploading more videos
Wow!!that such an awesome comment to read!! Thank you so much for the appreciation!! Keeps me motivated....😊😊👍👍👍
It's 160 in the end mam
And the video is very helpful. Thank you
Most welcome...Really happy that you found the video useful!! 😊😊👍👍
Yes,you are right,pls check my pinned comment 👍👍
U have a very nice and calm voice!! Makes learning less stressful
Thank you so much for the lovely compliment!! You've made my day with your encouraging comment!! 😊😊👍👍
The video is definitely useful. There is an inadvertent mistake. Instead of 180 it should have been 160. Thank you.
Thank you so much for the appreciation!! Yes, you are right....I have mentioned it in the pinned comment 👍👍👍
@EnjoyMath When you are calculation St. Deviation how do you determine your denominator? Can you please explain when we are to use St. Deviation formula of sample data (n-1) vs St. Deviation formula of population data ?
Thank you for your time!
Yes, there are 2 formulae....population data means we know all the actual data and actual mean value...then we can use denominator as n. However, if there is any real life data, it is impossible to get the complete picture, we can only take a sample,that is sample data...then we keep denominator as n-1..... I think it should be mentioned in the question if it is sample data or population data for us to decide which formula to use..pls let me know if u have any questions
I have been really struggling as my lecturer only posts videos and is very rarely online to talk to, you have shown me exactly how to do it so much quicker
Thank you so much for the wonderful feedback, really means a lot !! very happy to be of help !!! 👍👍👍👍
Thank to you ma'am very helpful video ❤
That's so good to know!! Thank you so much for the appreciation! 😊😊👍👍
Very helpful video to understanding the standard deviation . ♥️♥️♥️
@@SurajDas-yk6zf that's so awesome to read!! Thank you so much for the wonderful comment😊😊👍👍
@@EnjoyMath you most welcome mam for replying my comment
@@EnjoyMath Mam I have a request to you, please upload the full videos of probabilities theorem: Binomial, Poison, Normal . I will be very helpful in uploading this video. I can't understand from book at all. Please mam, this is my humble request to you 🙏🙏🙏🙏
@@SurajDas-yk6zf yes sure, will try my best... This is for which grade?
@@EnjoyMath For MBA level grade
Tysm for all the efforts. Is the denominator supposed to be N or N-1, different sites and videos show different formulae. Please resolve this doubt.
Thank you so much for the appreciation!! Yes, the denominator is different depending on if the data is sample data or population data. population data means we know all the actual data and actual mean value...then we can use denominator as n. However, if there is any real life data, it is impossible to get the complete picture, we can only take a sample,that is sample data...then we keep denominator as n-1..... I think it should be mentioned in the question if it is sample data or population data for us to decide which formula to use..however my observation is that for grade 11 cbse ncert ,they have used denominator as 'n'.
pls let me know if u have any questions
thank you so much for the explanation!@@EnjoyMath
Most welcome!! 😊😊
In some video they are dividing it by N-1 which one is correct madam?
It is correct,both formulae are correct,one is for sample data,the other for population data, which formula is your teacher following?
Thanks mam it is wonderfull teaching,super understanding ❤
Thank you so much for the wonderful comment.... really happy that you found the video useful 😊😊👍👍👍
@Enjoymath
What if summation of frequency (N )is less than 30.
the formula for standard deviation would remain the same ?
Even If sum of frequency is less than 30 , there should not be any change in the method....if possible,can u pls give some more information abt the question?
Thank you ma'am 🎉🎉
Most welcome!! Very happy to be of help!! 😊😊👍👍
Wonderfully explained the concept so crystal clearly❤😊
Thank you so much for the wonderful comment.... really means a lot to me!! 😊😊👍👍👍
Helped me a lot. Thank you. 😊
Most welcome!! Really happy to be of help 😊😊👍👍
i was wondering if i could use this method which is in root we have Σfx(x)-(xbar)square/Σf
Yes ,you can use this formula, it gives you the variance value...
Best video
Thank you so much for the wonderful comment.... really happy to be of help!! 😊😊👍👍
Thank u so Mach mam this video help me to calculate solution🎉🎉🎉🎉🎉🎉
That's awesome!! Thank you so much for the wonderful comment.... really happy to be of help!! 😊😊👍👍
Bhai koi batao ki variance
S.d/mean*100
Hota hai kya??
For mean
Variance ka square root standard deviation hota hai..
Variance = sqrt( standard deviation)
Pls let me know if you have any questions..
Thank you so much 🥰
Most welcome..I am very glad that you found the video useful 👍👍👍😊😊
maam also u didn't if its data sample or population sample...bcz in data sample we denote the deviation by S...if im not wrong...just first day of my study so
Yes, this is population data, not sample data, sorry abt not mentioning....in many books i have seen formula for population data and in many other books formula for sample data being used... Are both formulae being taught in your grade?
@@EnjoyMath im a self learner :)
Wow ...that's very interesting!! 👍👍👍😊😊
You explained it very nicely.got it in one go😊
That's superb!! Thank you so much for the appreciation!! Really glad to be of help 👍👍😊😊
Thanks for the video, great job.
Thank you so much for the appreciation!! Really happy to be of help 👍👍👍
very good
Thank you so much for the appreciation !! Really happy to be of help!! 👍👍👍
Very nicely explained ❤
Thank you so much for the wonderful comment.... really means a lot!! 😊😊👍👍
Thank you madam👍
Most welcome!! V happy that you found the video useful!! 😊😊👍👍
Why there are formula differences in txtbk and youtube ?
Is the denominator different?
The process is right but there is some mistake in the calculation. The second value of fixi is 1152 and the standard deviation should be 12.64. Thank you
Hello, I have checked all the calculations....the fixi values are fine, the last step division is incorrect , 8000/50= 160, not 180.... Pls note, thank you 👍👍👍
144 × 8 = 1152 not 1154
@@shiwanimangar2168 actually I have taken 1152 for calculations, but written 1154 by mistake....thank you for pointing it out
Thankyou Ma God bless you
Thank you so much for the wonderful feedback and wishes 👍👍😊😊
Thank you very much mam 🙏🏻🙏🏻
Most welcome!! Really glad to be of help!! 😊😊👍👍👍
i really understood
So happy to know that the video has been of help to you!! Great going!! 👍👍👍
Thank you so much ❤
Most welcome!! Thank you so much for the appreciation!! 👍👍👍
160 Mam right answer and last answer is 12.65
Yes,that's absolutely correct...pls check my pinned comment about the same👍👍
Thank you 🙏🏻
Most welcome!! Really happy to be of help 😊😊👍👍
Thanku mam❤
@@gaminghut2519 most welcome!! Really happy to be of help!! 😊😊👍👍👍
Thanks
Most welcome!!Really happy to be of help...!! 😊😊👍👍
Standard deviation answer is wrong that should be 160 because 800 divide by 5 is 160 so ✅ the answer
That's absolutely correct....pls check my pinned comment,have mentioned about it 👍👍
How to calculate variance of the frequency given?
@@aDistraction_xoxo square of standard deviation gives the variance.... Is that your question? Pls let me know...
Ma'am my question was if the x and f is already given then how will I calculate the variance?
Ma'am can I send my question in ur ig?
@aDistraction_xoxo yes sure,pls send
Some people use n-1 and some use n in the division of this formula why?
Yes, there are 2 formulae....population data means we know all the actual data and actual mean value...then we can use denominator as n. However, if there is any real life data, it is impossible to get the complete picture, we can only take a sample,that is sample data...then we keep denominator as n-1..... I think it should be mentioned in the question if it is sample data or population data for us to decide which formula to use..pls let me know if u have any questions
@@EnjoyMath thank you very much for the clarification, I really appreciate that mam!!
@@Anonymouss670 most welcome 😊😊
Mam N is the no. Of frequency not the sum of frequency
Number of frequency means total number of frequency...and that is the same as sum of frequency...and they are denoted by the letter 'N'.....pls let me know if you have any questions.....
No mam I checked the formula on Google and N is the no. Of units in the column
The video was so smooth and simple to understand I liked it.
Tomorrow is my exam of basic mathematics and it contains of statistics .😅
@@Takalkaranchagaurav yes number of units means total frequency
8000 divided by 50 is not 180 but 160
Yes,that's correct...pls check my pinned comment 👍👍👍
Your answer is wrong .. there will be 800/5 = 160 not 180... Please do the calculation correctly many of the students are watching u .. pls don't confuse them .... 🎉. Please make the corrections
@@RahulKumar-vv4fq you are right, pls check my pinned comment.... It's a calculation mistake I realised after uploading the video, so we cannot clip out a video portion and put the correct clip once it's uploaded.... Hence I have put a pinned comment...yes, since this mistake, I am trying my level best to do multiple rechecks before publishing any video.... But again,I agree I am not perfect... 🙏🙏🙏🙏
@@EnjoyMath pls don't get offended.. u do good... .. and u will .. 🔥
@@RahulKumar-vv4fq not at all offended... Appreciate your honest and constructive feedback😊😊👍👍
√1/5*8000 = √160✔️ √180❌
Yes,you are absolutely right 👍 👍 have mentioned this in my pinned comment..,..
Ans should be 12.649
Yes, that's correct 👍👍 have mentioned abt it in my pinned comment...
4√10 is answer madam
@@saravananrailway absolutely correct 👍👍
pls check my pinned comment 👍👍
Standard deviation should be 12.64.
That's correct,pls check pinned comment
Median deviation nhi bataya hai ???
Sorry ...Nahi, yeh video standard deviation and variance ka hai...
No problem mam .thankyou for this .its helping me allot
Most welcome!! Very happy to be of help 👍👍👍
Its 160 not 180
Yes you are right,pls check my pinned comment 👍👍👍
mem 1/50×8000=160 😢
Absolutely correct....pls refer to the pinned comment 👍👍
You have written one value wrong and so your answer is also wrong....
Yes, you are right...pls see pinned comment 🙏🙏
your formula confuse me..our teacher formula and your very different...
@@luchiNalo what is your teacher's formula?
1÷50×8000=160🤨🤔🤨
Yes, that's right....pls see the pinned comment....
Women is women 😂😂😂 right answer 12.65
😀😀😀pls check the pinned comment...
Thanku so much ma'am🙏🏻
Really happy to be of help!! Thank you so much for the appreciation!! 😊😊👍👍👍
Thank you so much ❤️😍
Most welcome!! Really happy that you found the video useful 👍👍😊😊