How to Calculate Standard Deviation of Continuous Data ? | Grouped Data Direct Method

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Hi Friends,
In this video, we will learn how to calculate the standard deviation of the continuous frequency distribution by direct method.
Correction: 5:27, Pls note Variance = 160 not 180 , Hence Standard Deviation = 12.64
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Common terms used-
how to calculate standard deviation of grouped data, how to calculate standard deviation of continuous data by direct method, how to calculate standard deviation of continuous frequency distribution, how to calculate variance by direct method, how to calculate variance of grouped data, statistics, mean of data, frequency, exclusive class intervals, what is standard deviation formula, what is variance formula, how to find standard deviation,
Thank You.
Priya.
#standarddeviation
#variance
#statistics

Опубликовано:

5 окт 2024

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Комментарии : 126

@EnjoyMath Год назад

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

@pritamspandey Год назад

Also 8000/50=160 not 180

@EnjoyMath Год назад

Yes,it's mentioned in the pinned comment 👍

@Aroojcrafter Год назад

Right

@samriddhisagun7163 6 месяцев назад

No problem ma'am.. these errors are really very small in comparison to your effort in making the concept crystal clear 😊

@EnjoyMath 6 месяцев назад

@samriddhisagun7163 thank you so much for that comment full of encouragement!! Really means a lot 😊😊👍👍👍

@Studyaccount-z1b 4 дня назад

Couldn’t understand anything from others but this video helped me a lot, very fantastically explained and straight to the point

@EnjoyMath 4 дня назад

It's awesome to know that video has helped u !! Thanks so much for the lovely feedback 😊😊👍👍👍

@bhupesh9023 6 месяцев назад

Hey this was one of the best videos on Standard Deviation on RU-vid, straight to the point, fantastic super clear and simple representation and excellent explanation!! kudos to you!!!

@EnjoyMath 6 месяцев назад

Thanks a million for the wonderful comment!! Glad to be of help....Really,comments like yours motivate me to try my best !! 👍👍👍👍😊😊

@naumanadil6683 25 дней назад

This is my 4th continuous video that I watched... wonderful work ma'am.. keep helping us by uploading more videos

@EnjoyMath 25 дней назад

Wow!!that such an awesome comment to read!! Thank you so much for the appreciation!! Keeps me motivated....😊😊👍👍👍

@aditii8385 Месяц назад

U have a very nice and calm voice!! Makes learning less stressful

@EnjoyMath Месяц назад

Thank you so much for the lovely compliment!! You've made my day with your encouraging comment!! 😊😊👍👍

@pksgkri 10 месяцев назад

The video is definitely useful. There is an inadvertent mistake. Instead of 180 it should have been 160. Thank you.

@EnjoyMath 10 месяцев назад

Thank you so much for the appreciation!! Yes, you are right....I have mentioned it in the pinned comment 👍👍👍

@tanmoyshee3116 16 дней назад

Thank you ma'am 🎉🎉

@EnjoyMath 15 дней назад

Most welcome!! Very happy to be of help!! 😊😊👍👍

@mathew4485 Год назад

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 Год назад

Thank you so much for the wonderful feedback, really means a lot !! very happy to be of help !!! 👍👍👍👍

@ramyayanumula6926 6 месяцев назад

Thanks mam it is wonderfull teaching,super understanding ❤

@EnjoyMath 6 месяцев назад

Thank you so much for the wonderful comment.... really happy that you found the video useful 😊😊👍👍👍

@tatianaspencer253 8 месяцев назад

@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!

@EnjoyMath 8 месяцев назад

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

@Shyama.06Patel 3 месяца назад

Helped me a lot. Thank you. 😊

@EnjoyMath 3 месяца назад

Most welcome!! Really happy to be of help 😊😊👍👍

@WTDchannel 10 месяцев назад

Thank you so much 🥰

@EnjoyMath 10 месяцев назад

Most welcome..I am very glad that you found the video useful 👍👍👍😊😊

@vaniesrilalithamageswaries1784 3 месяца назад

In some video they are dividing it by N-1 which one is correct madam?

@EnjoyMath 3 месяца назад

It is correct,both formulae are correct,one is for sample data,the other for population data, which formula is your teacher following?

@shiwanimangar2168 Год назад

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

@EnjoyMath Год назад

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 👍👍👍

@shiwanimangar2168 Год назад

144 × 8 = 1152 not 1154

@EnjoyMath Год назад

@@shiwanimangar2168 actually I have taken 1152 for calculations, but written 1154 by mistake....thank you for pointing it out

@giftmedicen5387 Год назад

Thankyou Ma God bless you

@EnjoyMath Год назад

Thank you so much for the wonderful feedback and wishes 👍👍😊😊

@Abhishekaks456 5 месяцев назад

Thank u so Mach mam this video help me to calculate solution🎉🎉🎉🎉🎉🎉

@EnjoyMath 5 месяцев назад

That's awesome!! Thank you so much for the wonderful comment.... really happy to be of help!! 😊😊👍👍

@LookWhatIFound674 Месяц назад

Thank you madam👍

@EnjoyMath Месяц назад

Most welcome!! V happy that you found the video useful!! 😊😊👍👍

@souloflaughter8183 5 месяцев назад

i was wondering if i could use this method which is in root we have Σfx(x)-(xbar)square/Σf

@EnjoyMath 5 месяцев назад

Yes ,you can use this formula, it gives you the variance value...

@ankitjakhar8787 Год назад

Thanks for the video, great job.

@EnjoyMath Год назад

Thank you so much for the appreciation!! Really happy to be of help 👍👍👍

@akku Год назад

You explained it very nicely.got it in one go😊

@EnjoyMath Год назад

That's superb!! Thank you so much for the appreciation!! Really glad to be of help 👍👍😊😊

@asshravanishravani5003 3 месяца назад

Wonderfully explained the concept so crystal clearly❤😊

@EnjoyMath 3 месяца назад

Thank you so much for the wonderful comment.... really means a lot to me!! 😊😊👍👍👍

@rahimusaidi5507 10 месяцев назад

@Enjoymath What if summation of frequency (N )is less than 30. the formula for standard deviation would remain the same ?

@EnjoyMath 10 месяцев назад

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?

@apoorvadash7729 6 месяцев назад

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.

@EnjoyMath 6 месяцев назад

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

@apoorvadash7729 6 месяцев назад

thank you so much for the explanation!@@EnjoyMath

@EnjoyMath 6 месяцев назад

Most welcome!! 😊😊

@chfarazwarraich341 9 месяцев назад

very good

@EnjoyMath 9 месяцев назад

Thank you so much for the appreciation !! Really happy to be of help!! 👍👍👍

@sarikachinchwade8632 6 месяцев назад

Thank you very much mam 🙏🏻🙏🏻

@EnjoyMath 6 месяцев назад

Most welcome!! Really glad to be of help!! 😊😊👍👍👍

@SonuSharma-fz4kj 7 месяцев назад

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

@EnjoyMath 7 месяцев назад

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?

@SonuSharma-fz4kj 7 месяцев назад

@@EnjoyMath im a self learner :)

@EnjoyMath 7 месяцев назад

Wow ...that's very interesting!! 👍👍👍😊😊

@RiyazAli-cb5ms 3 месяца назад

Standard deviation answer is wrong that should be 160 because 800 divide by 5 is 160 so ✅ the answer

@EnjoyMath 3 месяца назад

That's absolutely correct....pls check my pinned comment,have mentioned about it 👍👍

@gaminghut2519 12 дней назад

Thanku mam❤

@EnjoyMath 11 дней назад

@@gaminghut2519 most welcome!! Really happy to be of help!! 😊😊👍👍👍

@akshatssharma9874 7 месяцев назад

Very nicely explained ❤

@EnjoyMath 7 месяцев назад

Thank you so much for the wonderful comment.... really means a lot!! 😊😊👍👍

@aDistraction_xoxo 6 дней назад

How to calculate variance of the frequency given?

@EnjoyMath 6 дней назад

@@aDistraction_xoxo square of standard deviation gives the variance.... Is that your question? Pls let me know...

@aDistraction_xoxo 6 дней назад

Ma'am my question was if the x and f is already given then how will I calculate the variance?

@aDistraction_xoxo 6 дней назад

Ma'am can I send my question in ur ig?

@EnjoyMath 6 дней назад

@aDistraction_xoxo yes sure,pls send

@_DeeCoDe 5 месяцев назад

Bhai koi batao ki variance S.d/mean*100 Hota hai kya??

@_DeeCoDe 5 месяцев назад

For mean

@EnjoyMath 5 месяцев назад

Variance ka square root standard deviation hota hai.. Variance = sqrt( standard deviation) Pls let me know if you have any questions..

@Anonymouss670 5 месяцев назад

Some people use n-1 and some use n in the division of this formula why?

@EnjoyMath 5 месяцев назад

@Anonymouss670 5 месяцев назад

@@EnjoyMath thank you very much for the clarification, I really appreciate that mam!!

@EnjoyMath 5 месяцев назад

@@Anonymouss670 most welcome 😊😊

@rippleshot7085 9 месяцев назад

i really understood

@EnjoyMath 9 месяцев назад

So happy to know that the video has been of help to you!! Great going!! 👍👍👍

@anwesha_00 Год назад

Thank you so much ❤

@EnjoyMath Год назад

Most welcome!! Thank you so much for the appreciation!! 👍👍👍

@umashankargk8333 4 месяца назад

Thank you 🙏🏻

@EnjoyMath 4 месяца назад

Most welcome!! Really happy to be of help 😊😊👍👍

@mentalff4680 3 месяца назад

160 Mam right answer and last answer is 12.65

@EnjoyMath 3 месяца назад

Yes,that's absolutely correct...pls check my pinned comment about the same👍👍

@pantheraleo1283 7 месяцев назад

Thanks

@EnjoyMath 7 месяцев назад

Most welcome!!Really happy to be of help...!! 😊😊👍👍

@davelutch 25 дней назад

8000 divided by 50 is not 180 but 160

@EnjoyMath 25 дней назад

Yes,that's correct...pls check my pinned comment 👍👍👍

@Takalkaranchagaurav 4 месяца назад

Mam N is the no. Of frequency not the sum of frequency

@EnjoyMath 4 месяца назад

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.....

@Takalkaranchagaurav 4 месяца назад

No mam I checked the formula on Google and N is the no. Of units in the column

@Takalkaranchagaurav 4 месяца назад

The video was so smooth and simple to understand I liked it.

@Takalkaranchagaurav 4 месяца назад

Tomorrow is my exam of basic mathematics and it contains of statistics .😅

@EnjoyMath 4 месяца назад

@@Takalkaranchagaurav yes number of units means total frequency