Mlungisi Nkosi | Grade 12 Mathematics | Statistics | Measures of Dispersion | Standard Deviation

Measure of dispersion - Standard deviation and variance are explained in the most simplified way.
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[@blakemartin6347]

this guy deserves an award for being so brilliant and humble i feel like i would trust this guy with my life, love the content you deserve the 100K

[@MlungisiNkosi]

Thank you so so much 😢

[@bonganithobela4949]

🔥🔥🔥😩 I joined the family this year an within 5 months I've managed to get to level seven because of your videos 🙏🏻🙏🏻🌎 you are the best

[@tanushrichetty6629]

These videos are just amazing and so helpful. Please do a video on paper 2 like the the one you did on paper 1 . Thank you so much

[@itsbanban05]

Hey. Love your video. It helped me a lot. Also, on the last portion of your video (32:54), you made an error when selecting the values that were within one standard deviation of the mean. The lower boundary was 335,89, not 338.89. The correct percentage is 85%, from my calculations.

[@nomandlovu638]

Please show me how you got that .... cause also from him i didnt get that ...

[@nomandlovu638]

Do we count from 335 -341?

[@Nagarium]

@@nomandlovu638 yes

[@thebeandkabelo]

It's 75%

[@thebeandkabelo]

@@nomandlovu638 no specifically from 335,89 - 341.31 so if a number is 335 exactly it doesn't count

[@EsethuEsethu-nv3uj]

Your presence is like Oxygen in human beings😊. God bless you

[@mariamphahlele2004]

Hi can l pls enquire abt the last example, um when calculating the std deviation right?..i thought std deviation is given to us in the statement wich is 2.74...

[@relaxchill4179]

Uncle is always on point. He don't miss💪

[@MlungisiNkosi]

Thank you 😊

[@ncumisakroti6932]

You never dissapoint 😭😭 Thank you sir .

[@MlungisiNkosi]

Thank you

[@brokensheisstillshewantsto3709]

I'm always happy 🤗😁Thank you sir, God bless you 🙏

[@MlungisiNkosi]

You’re welcome

[@nomandlovu638]

Hi Mr Nkosi ....i dont understand the standard deviation formula i need some clarity on that ...

[@LeratoDikotla]

Hi sir On the last question looking at the learners above u looked at class A but looking at learners below u looked from class A and B I don't understand why not classB on can u plz explain it for me

[@noxolongubane272]

Sir I think you made an mistake on last example when you calculate the standard deviation of a below mean the answer should be 335.89

[@MlungisiNkosi]

Thank you for correcting me

[@ziziphobaduza-np3de]

Yha I also saw that therefore I think that the correct answer is 18/20*100 which gives us 90%

[@C.O.M.P.A.S.S]

Yeah he made a mistake n I think the final answer is 15over20×100=75%

[@ernestubisi6849]

Sir why are you using a Sigma sign to express your standard deviation while you expressed your mean as a X-bar... because the X-bar correspond with the small letter (s) as an expression of standard deviation and Muon sign is the that is supposed to be expressed as a Sigma sign?🤷‍♂

[@user-ei9xu2tq6y]

Uncle you never disappoint & i like it 😇

[@MlungisiNkosi]

❤️❤️❤️❤️❤️❤️❤️

[@user-kp8lq3of3t]

Wish you also did accounting your pace and patients is on point ....

[@MlungisiNkosi]

It’s coming…

[@preciousdubazana6551]

Forever grateful Sir :)

[@MlungisiNkosi]

Thank you 😊

[@matholemathole4121]

Hi please advice after punching in the data then I press AC on Casio where do I go I'm bit lost please kindly advice I didn't get it

[@josuawilliam-grantsmith6002]

Search on Google it'll give you a set formula/instructions to get to each answer.

[@matholemathole4121]

@@josuawilliam-grantsmith6002 thanks

[@mukilejosehina4812]

Press shift,followed by 1 then it will guide u easily

[@kekananellymokgaetsi6582]

Press shift and then one

[@mildredagu8028]

Sir is this the last chapter in Statistics

[@MlungisiNkosi]

I’ll just do one last video on Histograms but essentially that’s it

[@mildredagu8028]

@@MlungisiNkosi Oh okay Thank you so much sir . May God bless you😊👍❤

[@luckyshale9538]

Thank you sir ❤️

[@MlungisiNkosi]

You’re welcome

[@mildredagu8028]

Thank you sir👍

[@MlungisiNkosi]

My pleasure 😇

[@ntandoyenkosimoyo2071]

Perfect timing

[@MlungisiNkosi]

Excellent

[@nwabisanono4164]

MR SIR👊🙌

[@MlungisiNkosi]

Malume’s got you

[@mayi4934]

Do you think it's advisable for a grade 11 learner to actually watch these

[@MlungisiNkosi]

Yes… Actually it’s grade 11 content.

[@mukilejosehina4812]

Strongly so

[@mbalikhumalo568]

❤️💯

[@MlungisiNkosi]

❤️

[@Bongiwe002]

Hey Uncle ♥️

[@MlungisiNkosi]

Wola 😃

[@ponatshegopule8299]

May you please avoid just giving us the standard deviation formula and actually substitute that would be highly appreciated ❤🙏🏾

[@PetuniaElizabeth]

Sir you mad a mistake, mean for class A is 72 and mean for class B is 71.4

[@MlungisiNkosi]

Thank you for pointinh that out

[@tokollomogashoa4602]

Hi sir , I think you made a mistake . Mean on Class B is supposed to be 71.6 % according to my calculations. Please kindly check that one out 😁

[@user-pb2op9cr2w]

Hello SIRRR.....I think u made a mistake for 2.3 because it was supposed to be the values between 336---341...plz can u just check...It is towards the end of the video

[@MlungisiNkosi]

Thank you for making me aware

[@perkydehuis2924]

Mean of class B is 71.2

[@MlungisiNkosi]

Thank you 😊

[@talliehazardous]

🎉uncle 🫡keep dishing out that content plz….

[@MlungisiNkosi]

You know how we do it 😎