Finding Mean, Standard Deviation using Calculator

Using Casio Fx-50FH-II
Suggested to change back to "Comp" (mode 1) after use

[@meydeja2173]

Math dse 2020 in less than a month , wish me luck!

[@chericiu]

all the best!

[@sarah4373]

so how did it go?

[@hedyhui1012]

Thank you for posting this video!its easy to understand👍

[@sarahli9005]

omg I just used shift 9 3!!!I cleaned all of my programs!

[@alankoyuk1123]

nice one

[@sujiliuu]

Bruh

[@0yeah818]

,😡

[@adamant8435]

Well done

[@strawbs3981]

Thankyou so much! This helps me a lot😆✨

[@adrian728]

it is really helpful to me, big big like to you man!

[@chericiu]

thanks for your support.

[@hoho_620]

Cantonese gang is appreciating

[@kadekevin566]

useful video, i learnt how to make other's calculators useless *evil laughs*

[@sherryckk7593]

That is helpful, thank you.

[@sunanson8209]

Your handwriting is awesome.

[@user-hp7tm2sj4u]

Thank you so much to share with us!

[@jessicagao6793]

Nice video, thank you so much.

[@KKapp.n]

Thank you so much you saved me from my exam

[@Lillyleelillyleelee]

It’s nice and clear thanks

[@aleeshashabir83]

Thank you this is so helpful

[@aliciayue8601]

thank you！you help me a lot!!!

[@nursyairah995]

Ahhh this help me alot thank uu !!!

[@swaggyskye]

hey - a freshman here - is there any way to find the sample statistics instead of population parameters by using the SD mode? For example, standard deviation for sample is calculated by squared deviance divided by (n-1) instead of n for population. Thanks :)

[@chericiu]

shift-2 "3" (sx) gives you the sample one

[@batoul313]

THANK YOU SO MUCH!!

[@YipWingTim1999]

I love u so muchhhhhh. great explanation^^

[@chericiu]

thanks! glad that it helps~

[@khalidanejjar4404]

This is helpful .. thanks

[@bonniewong2289]

haha miss this kinda English with Hong Kong accent! thanks anyway, got what I needed

[@4evervkook172]

very helpful，thank you

[@isaaccheung9198]

it helps a lot

[@cpnniewong2211]

two more days to go for 2020 dse ...

[@chericiu]

All the best!

[@cool-ik7gv]

excellent!!!

[@leochow9652]

Bro saved me from F5 exam from 2016

[@fatmaalmarrie6851]

i swear i knew you were asian the moment you said ''throw it away'' and 'efficently '' its ablosutley like how my chinese friend talks like haha thank you for the vid!!!!!!

[@chericiu]

yes I am lol

[@amychan770]

interesting findings! I am also a hongkonger myself and I do use these terms quite often. So how do native speakers express "throw it away" and "efficiently"?

[@shelbybhai3166]

Plz let me know how to find a group of scattered number in ascending order..my calci is 991es plus

[@chericiu]

sorry I am not knowledgeable enough to answer you this question. I have researched a bit on it, but I could not find relevant information. sorry for that.

[@meowflyfly]

thank you👏👏👏

[@singtaleung8233]

Hello your video is very helpful:) Can you teach how to use the calculator to find the individual mean and SD of each X and Y at the same time(not the group one) Thanks a lot!! Also how to find the r, a and b in the line function :)

[@chericiu]

Thanks. For your question, I am actually not very sure. Do you mean regression? See whether this program (in Chinese) helps: webcal.freetzi.com/casio.fx-50FH/regression_var.htm

[@abdulraheem-vb2kv]

thanks man

[@HWei-ju8ut]

May I ask why nothing happened when I pressed 10 and then M+ despite that I have done all the steps you mentioned before it? ( I didn’t press shift 9 3 and the model of my calculator is the same as yours)

[@chericiu]

did you enter the "SD" mode yet? (Press Mode "4" to enter the mode)

[@HWei-ju8ut]

@@chericiu yes I did

[@chericiu]

​@@HWei-ju8ut oops then I have no idea... You may try again exactly these procedures: Mode 1 (COMP) Mode 4 Shift - 9 - 1 EXE 10 M+ (then you will see line=1) 20 M+ (then you will see line=2) Shift - 2 - 2 EXE if you see "5", then it is correct. If not, then maybe I am not able to help, sorry

[@HWei-ju8ut]

@@chericiu ok thanks 🙏

[@Getgot-en1kv]

Thanks, what is sx next to SD?

[@chericiu]

that's "Sample standard deviation". calculated by sqrt((sum of all "square of difference") / (n-1)) Reference: www.thoughtco.com/calculate-a-sample-standard-deviation-3126345

[@meowflyfly]

so helpful😿😿

[@rafsanalamin6991]

Thanks

[@blueboi-wo8cl]

thanks :))😀😀

[@An_yujin4ever]

good! firm!

[@jimmy436]

Thank You so much!!! But just one reminder. That's "Data" not "Dater"

[@chericiu]

not speaking English well 🙈 nvm

[@joshuapaulmaguigadlucing8506]

I love u

[@abdulwahabaatif4368]

Tmr is my math exam

[@chericiu]

all the best

[@snk9409]

Thank You!! How to change between population and sample mean in the calculator?

[@chericiu]

the one from the calculator is the sample mean. this is also the estimate of population mean.

[@idontknowyou2621]

I don't have semicolon in my calculator, can i use normal multiplication

[@chericiu]

is your calculator the model? If so, you can press "shift + comma" to get semicolon. of course normal multiplication is fine. this video only teaches the shortcut way.

[@idontknowyou2621]

@@chericiu okay thank you

[@208ream]

Please do more videos in English... you're amazing..

[@valtql4575]

why when i want to check the numbers of data and is 4instead of 66

[@chericiu]

did you use Shift - 1 - 3 to check the number of data?

[@user-ut8pl3hx8h]

2025dse still watching😁

[@BigLizardEnergy]

You are a legand... please become a teacher

[@chericiu]

thank you. I'm indeed a teacher in Hong Kong haha

[@amaya7682]

can u explain this for fx-991es plus

[@chericiu]

I do not have the model of fx-991es plus, so I may not help you in this. I find a related video for fx-991es plus. See if it helps. kzbin.info/www/bejne/Zn6WlXWIhtmBfpo

[@adityakumar-ck1oj]

Bakwas

[@samsonpau]

nice video, but you really need to work with your R sound....annoying american accent : Howeverrrrrrer, enterrrer

[@misswonderful31]

rude

[@hoho_620]

Respect them please, do you know how hard Hong Kong people learning English and it is not their mother tone

[@hi-dg1bx]

@@hoho_620 still cringe af