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Casio Classwiz fx-991EX Statistics | Find Mean, Variance, Standard Deviation & Summary Statistics

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⨸ Aʙᴏᴜᴛ Tʜɪs Vɪᴅᴇᴏ ⨸ - Casio Classwiz Statistics Mode
You can use the Classwiz statistics mode to easily find the mean, variance and other stats information including standard deviation, sample variance, median and quartiles of a set of data. A comprehensive screen displays all the relevant data.
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𝘍𝘰𝘳 𝘷𝘪𝘥𝘦𝘰𝘴 𝘤𝘰𝘯𝘤𝘦𝘳𝘯𝘪𝘯𝘨 𝘢 𝘊𝘢𝘴𝘪𝘰 𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳, 𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳 𝘚𝘺𝘮𝘣𝘰𝘭𝘴, 𝘔𝘰𝘥𝘦𝘴, 𝘐𝘮𝘢𝘨𝘦𝘴 & 𝘗𝘳𝘰𝘥𝘶𝘤𝘵 𝘕𝘢𝘮𝘦𝘴. 𝘢𝘳𝘦 𝘊𝘰𝘱𝘺𝘳𝘪𝘨𝘩𝘵© 𝘊𝘢𝘴𝘪𝘰 𝘊𝘰𝘮𝘱𝘶𝘵𝘦𝘳 𝘊𝘰. 𝘓𝘵𝘥 . 𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳𝘴 𝘧𝘳𝘰𝘮 𝘰𝘵𝘩𝘦𝘳 𝘤𝘰𝘮𝘱𝘢𝘯𝘪𝘦𝘴 𝘮𝘢𝘺 𝘴𝘰𝘮𝘦𝘵𝘪𝘮𝘦𝘴 𝘧𝘦𝘢𝘵𝘶𝘳𝘦, 𝘪𝘯𝘤𝘭𝘶𝘥𝘪𝘯𝘨 𝘛𝘦𝘹𝘢𝘴 𝘐𝘯𝘴𝘵𝘳𝘶𝘮𝘦𝘯𝘵𝘴, 𝘕𝘶𝘮𝘸𝘰𝘳𝘬𝘴 & 𝘚𝘩𝘢𝘳𝘱. 𝘛𝘩𝘦𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳𝘎𝘶𝘪𝘥𝘦.𝘊𝘰𝘮 𝘦𝘢𝘳𝘯𝘴 𝘮𝘰𝘯𝘦𝘺 𝘧𝘳𝘰𝘮 𝘥𝘪𝘴𝘱𝘭𝘢𝘺 𝘢𝘥𝘴 & 𝘢𝘧𝘧𝘪𝘭𝘪𝘢𝘵𝘦 𝘭𝘪𝘯𝘬𝘴. 𝘓𝘪𝘯𝘬𝘴 𝘛𝘰 𝘗𝘳𝘰𝘥𝘶𝘤𝘵𝘴 & 𝘛𝘩𝘪𝘳𝘥 𝘗𝘢𝘳𝘵𝘺 𝘞𝘦𝘣𝘴𝘪𝘵𝘦𝘴 𝘴𝘶𝘤𝘩 𝘢𝘴 𝘈𝘮𝘢𝘻𝘰𝘯 𝘢𝘯𝘥 𝘰𝘵𝘩𝘦𝘳 𝘳𝘦𝘵𝘢𝘪𝘭𝘦𝘳𝘴 𝘢𝘳𝘦 𝘢𝘧𝘧𝘪𝘭𝘪𝘢𝘵𝘦 𝘭𝘪𝘯𝘬𝘴. 𝘐𝘧 𝘺𝘰𝘶 𝘤𝘭𝘪𝘤𝘬 𝘰𝘯 𝘵𝘩𝘦𝘴𝘦 & 𝘣𝘶𝘺 𝘢 𝘱𝘳𝘰𝘥𝘶𝘤𝘵 𝘵𝘩𝘦𝘯 𝘛𝘩𝘦𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳𝘎𝘶𝘪𝘥𝘦.𝘊𝘰𝘮 𝘳𝘦𝘤𝘦𝘪𝘷𝘦𝘴 𝘢 𝘴𝘮𝘢𝘭𝘭 𝘤𝘰𝘮𝘮𝘪𝘴𝘴𝘪𝘰𝘯 𝘢𝘵 𝘯𝘰 𝘦𝘹𝘵𝘳𝘢 𝘤𝘰𝘴𝘵 𝘵𝘰 𝘺𝘰𝘶. 𝘛𝘩𝘪𝘴 𝘩𝘦𝘭𝘱𝘴 𝘴𝘶𝘱𝘱𝘰𝘳𝘵 𝘵𝘩𝘦 𝘤𝘩𝘢𝘯𝘯𝘦𝘭 & 𝘢𝘭𝘭𝘰𝘸𝘴 𝘮𝘦 𝘵𝘰 𝘤𝘰𝘯𝘵𝘪𝘯𝘶𝘦 𝘵𝘰 𝘮𝘢𝘬𝘦 𝘷𝘪𝘥𝘦𝘰𝘴.

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1 мар 2016

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Комментарии : 93

@Arya-ep5fw 4 года назад

literally saved my life bro! Got statistic test tmr and forget how to use the calculator. VMT!

@liamexter 6 лет назад

I never thought I'd say this about a video on calculators but... Beautiful video!

@TheCalculatorGuide 6 лет назад

Thank you. All the best.

@therepublicofshads1549 2 года назад

A big applaud for this amazing man. A big exam life saving video, man. Thank you very much.

@sirlimonada2 Год назад

bro here carrying the whole society by helping future scientists and engineers

@nickjohn2051 7 лет назад

Fuhhhh dude. You just save me in statistic class. How to repay you man!!

@TheCalculatorGuide 7 лет назад

Just keep watching. All the best.

@nickjohn2051 7 лет назад

The Calculator Guide Thank you. I post a few vids to my girlfriend in engineering class. Thank you again man.

@user-fg6ro 6 лет назад

The Calculator Guide Why don't people read the manuals these days? The Casio fx manuals of the 1980s and 1990s were fascinating.

@RandomWasVeryTaken 4 года назад

Mayur the words are too long

@lumosv1014 2 месяца назад

Goat sorting out my A levels for me

@t_t8992 Год назад

I've got a quiz next week and this video saved my life! - An fx-991EX user :D

@timnergaard3831 5 лет назад

Thank you! I have Statistics test in a couple of days.

@ellportador 6 лет назад

Jajajaja I love this calculator, everybody in my class is impressed With it. It's so usefull.

@cherrygirl8479 5 лет назад

Level hy dude😍 really helpful...Chaa gay ho ap to❤

@chathuralakshan542 9 месяцев назад

I use linear interpolation method to find the Q1,Q2&Q3. so the values are different from the calculator. how can i use linear interpolation method to find Q1 Q2 Q3 in calculator for 1--Variable?

@oasnap 4 года назад

Perhaps I haven't made it far enough in my stats class yet, but what is the different between "variance and standard deviation" and "variance and standard deviation of our sample"? (σ^2x vs S^2x & σx vs Sx) Thanks.

@TheCalculatorGuide 4 года назад

The population variance and sd (represented by σ) uses n, the number of values in the calculation, whilst the sample variance and sd (represented by s) uses n-1 in the calculation. It is because the sample variance has one less degree of freedom to give an unbiased estimate. There's a video from Khan academy for more on this www.khanacademy.org/math/ap-statistics/summarizing-quantitative-data-ap/more-standard-deviation/v/review-and-intuition-why-we-divide-by-n-1-for-the-unbiased-sample-variance

@peelawliet2691 Год назад

Thank you so much 😢😢😢😢 It helps me a lot😭😭😭

@davidhill8163 Год назад

Many thanks

@ShaidaMuhammad 4 года назад

Exam night, helped, thanks.

@minecaftlichking 4 месяца назад

thank you

@strider51234 5 лет назад

Old but helpful. Subbed!

@edwinsrayma713 Год назад

Thanks!!

@user-lz5jp3tn4v 6 лет назад

I want to learn this good work

@francine8563 3 года назад

May I ask? what is the symbol for the standard deviation of a sample? I'm quite confused with the sigma and the s.

@TheCalculatorGuide 3 года назад

Yes the sample standard deviation uses an s, so sd. Population standard deviation is sigma, so σd

@francine8563 3 года назад

@@TheCalculatorGuide THANK YOU SO MUCH SIR

@_M_D_M_ 3 года назад

Great stuff. Thanks.

@benzeltser9851 6 месяцев назад

OH NICE!!!!!!!!!!!!!

@simpingoverwendy9744 Год назад

thank you man

@robithevampire 7 лет назад

Very informative. Thank you!

@DevalaGriffith 2 года назад

very helpful thanks

@pkyoupvp 4 года назад

Thank you for this!!!

@skybluey217 3 года назад

Thank you!!

@sososong3438 7 лет назад

that's great, im taking data now

@mac6 4 года назад

Thank you

@15october91 7 лет назад

Very useful thanks.

@TCWordz 7 лет назад

Is it possible to enter in summarised data and have the calulator work things out (eg. tell me the SD if it input SigmaX, SigmaY, SigmaX^2, SigmaY^2, SigmaXY, and n) or do you have to enter the data individually? For example, this would be useful for being able to check answers to exam questions if they don't give you the full data.. Thanks!

@TheCalculatorGuide 7 лет назад

+TCVidz I believe you have to input the data, but I will look into it.

@user-gh7nf7iz2r Месяц назад

may god bless you

@Mr_Legend388 4 года назад

can the calculator display the square of each value in the screen ?? for example if we have set of value: 1, 2, 3, 4 can the calculator display 1, 4, 9, 16 like that the square of each value at once ?????

@TheCalculatorGuide 4 года назад

The easiest way would be to use Table. It put your f(x) as x^2, no g(x) Start as your first value and step as your last and increasing by a step of 1. Press equals and it should give you a set of square numbers. You could also use spreadsheet instead.

@blackpanther2109 4 года назад

@@TheCalculatorGuide Thank you By the way is this calculator is the latest version I mean is there more advanced version than fx 991ex that can preform same function ??? and is it legal to use it in PHD studies??

@TheCalculatorGuide 4 года назад

@@blackpanther2109 Don't know what would be allowed in a PHD you would have to confirm with your institution. The fx-991EX represents one of the best scientific calculators you can currently get. If you wanted to go above this you would move into graphic calculators.

@MyKris121 3 года назад

hi! can I ask, what do you press if you want to find the sample variance or population variance?

@TheCalculatorGuide 3 года назад

On the summary stats page there should be σ²x which is the population variance and s²x which is the sample variance. If you want to use them in calculations select OPTN and Statistics Calc once you have inputted your data , Then OPTN, down , 2:Variable and they are available in there to use.

@MyKris121 3 года назад

@@TheCalculatorGuide thank you very much 🥺🙏💖

@sarahsaied4504 7 лет назад

thanks so much!

@kimdenysej.haolin1627 6 лет назад

Can you store the values of these data in the calculator as a variable?

@TheCalculatorGuide 6 лет назад

I don't think so unfortunately.

@weevilinabox Год назад

All the result variables are accessible individually. See page 21 of the User Guide. support.casio.com/storage/en/manual/pdf/EN/004/fx-570_991EX_EN.pdf

@Matthew_Monte 5 лет назад

How many data entries can be added into a single sample

@TheCalculatorGuide 5 лет назад

160 for a single column, 80 for two columns, 53 for three columns of data.

@cr3zy-moments906 6 лет назад

thanx

@mertbilir2616 8 лет назад

thank u

@pompeiilujuria1883 6 лет назад

how do u get the Z area to the left and to the right?

@TheCalculatorGuide 6 лет назад

You would need to use the distribution mode. More on this soon hopefully.

@shashankgunda 7 лет назад

what does s2x means ? please ?

@TheCalculatorGuide 7 лет назад

+shashank Gunda It is the sample variance. More information here www.math.uah.edu/stat/sample/Variance.html.

@DFxAngelz 7 лет назад

Hi, how would you input data to find f, fx and fx^2?

@TheCalculatorGuide 7 лет назад

+Rahee Ali It wouldn't display these individual, but you can find the sum of fx and fx^2

@joshuadorman4655 3 года назад

@@TheCalculatorGuide how?

@ecoscopic7872 5 лет назад

How do you use the Calculator Simulator on the video?

@TheCalculatorGuide 5 лет назад

You need to download it from the edu Casio site. There is a 90 day free trial and then a yearly subscription.

@jadhreiki7690 4 года назад

how could you do this if you had the data but also frequency

@TheCalculatorGuide 4 года назад

You can switch frequency on in the Setup menu. Shift, setup and scroll down to the statistics option. From there turn frequency on.

@joshuadorman4655 3 года назад

@@TheCalculatorGuide you are the fricking best

@charliem8269 6 лет назад

How can I do statistics with 2 variables?

@TheCalculatorGuide 6 лет назад

They would have to have a relationship such that you could calculate a regression. You could select one of the later choices in the STATS menu to do this. You can only do one independent variable at one time, so you would have to do them separately if they did not have a relationship.

@inayaturobani7637 6 лет назад

Thanks a milionnnnn :))))

@nsx001 7 лет назад

What about grouped data with frequency? Please reply!

@TheCalculatorGuide 7 лет назад

You just need to use the mid-points of the groups as your x values

@nsx001 7 лет назад

The Calculator Guide but there are frequencies?

@TheCalculatorGuide 7 лет назад

You need to make sure frequency is turned on in the STAT option in the Setup Menu

@nsx001 7 лет назад

The Calculator Guide a video of this would be great. As this type of maths do come in S1 exams. Thank you.

@TheCalculatorGuide 7 лет назад

As soon as I can i will.

@janzeey4514 4 года назад

Thankssss

@temporarinvender9811 7 лет назад

how can used on grouped data?

@TheCalculatorGuide 7 лет назад

If you're talking about Classes then you would have to use the mid-point as your x-value. If you are referring to situations where you already have sigma values as with a previous poster, then I'm not sure you can, but will look into it.

@adflyofficial 4 года назад

His name is JOHN CENA

@prosimulate 6 лет назад

If you can believe it I am doing an MSc in Safety and Reliability Engineering and this calculator is not allowed. I think the University enjoys living in the dark ages. They should get us to write on papyrus to complete my experience...

@TheCalculatorGuide 6 лет назад

That is unbelievable. I think university qualifications take a long time to change/adapt to new technology.

@janzeey4514 4 года назад

I thought my calculator was dumb

@user-hi2nd 5 лет назад

has anyone told you that you sound like janos slynt from game of thrones

@TheCalculatorGuide 5 лет назад

No only Stampcat 😼

@TheCalculatorGuide 5 лет назад

Stampy cat

@parissharples1764 5 лет назад

God fucking bless

@rodolfosottojr.8898 2 года назад

I hate this calculator. You can not recall the values for you to use in further calculations. Lets say I want to find the standard error by dividing s by sqrt of n. you will have to copy the values manually somewhere and then type it in the calculator. VERY ANNOYING and TIME CONSUMING. a possible source of error too!!

@weevilinabox Год назад

I struggled with this, too, but the answer is right there on page 21 of the User Guide. support.casio.com/storage/en/manual/pdf/EN/004/fx-570_991EX_EN.pdf If you want to use the values in another mode (i.e. not statistics), just save the values you want into the variables A to F, or M.