Math Advanced Prediction/Thoughts (1 Viewer)

[Porogamiii]

also does anyone know how to insert normal probability distribution shit into a calculator? i have the fx-82 just like everyone in my grade does but when i press Shift+1 i only get 5 options (type, data, sum, variance, min/max) and my distribution option is not there

I think it's only the fx-100AU PLUS that allows you input stuff into the normal distribution and calculates it for you

 

[d1zzyohs]

I think it's only the fx-100AU PLUS that allows you input stuff into the normal distribution and calculates it for you

Ah, indeed. I was just thinking about bi-variable stats. Sorry!

 

[hatterene]

You've got enter in some ax+b data by going into mode -> stat; and then u will have a new option for the probability distribution variables (r, A, B, etc)

yeah i wasn't able to do this. is it worth it to bring in a second calculator just for normal distribution

 

[d1zzyohs]

yeah i wasn't able to do this. is it worth it to bring in a second calculator just for normal distribution

Nope. I've never thought I needed such a feature. I would recommend learning the formula; and how you can apply such a formula with your normal calculator.

 

[GanonRorf]

For graphing, are we allowed to have different scales on each axis or nah? (eg. 1cm=1 on x axis, 1cm=5 on y axis)
thx

 

[mikrokosmos]

For graphing, are we allowed to have different scales on each axis or nah? (eg. 1cm=1 on x axis, 1cm=5 on y axis)
thx

yep

 

[d1zzyohs]

For graphing, are we allowed to have different scales on each axis or nah? (eg. 1cm=1 on x axis, 1cm=5 on y axis)
thx

I am almost entirely sure yes, you are allowed. Some graphing questions have maximas, of like (3,27), etc; and these would be ridiculous to draw true-to-size especially with the size of working out they give you.

 

[hatterene]

For graphing, are we allowed to have different scales on each axis or nah? (eg. 1cm=1 on x axis, 1cm=5 on y axis)
thx

i never did my shit to scale wdym

 

[mikrokosmos]

also what were you guys talking about normal dist's and the calculator? isnt normal dist just the graph with 0.15%, 2.35%, 13.5, 34%, etc?

i never did my shit to scale wdym

 

[d1zzyohs]

also what were you guys talking about normal dist's and the calculator? isnt normal dist just the graph with 0.15%, 2.35%, 13.5, 34%, etc?

Yep. Or the proper z-score probabilities if given. The other commenter was confused on if we needed a calculator that has a function white allows you to find the probability of z-scores on a normal distribution with a button (fx-100); but u can do the same stuff with fx-82 as long as you know your basics.

 

[abstractaviator]

i never did my shit to scale wdym

you’re using fx-82AU right? press MODE SETUP, then STAT, then press 2 (for A+BX). Then input all your x and y values. Once you’re done, press AC, then SHIFT+1, then 5 (for Reg), then select whichever variable you need (a b r etc.), then press =.

I think this is what you’re after

 

[Constantspy977]

idek why I am here, Im in yr 8 lmao

 

[uniqueusername1]

idek why I am here, Im in yr 8 lmao

yes just go back to playing cool maths games or whatever you guys play rn

come back here in 3-4 years

 

[mikrokosmos]

Yep. Or the proper z-score probabilities if given. The other commenter was confused on if we needed a calculator that has a function white allows you to find the probability of z-scores on a normal distribution with a button (fx-100); but u can do the same stuff with fx-82 as long as you know your basics.

OH right okay thank you just to clarify, for normal we just need to know the percentages and z score calculations? sorry haha if im correct you can just like the message

 

[Constantspy977]

yes just go back to playing cool maths games or whatever you guys play rn

come back here in 3-4 years

cool math games? lol no I don't play games since I have asian parents

 

[Constantspy977]

anyway, seeing that we are in a math thread, can anyone help with this question?

 

[uniqueusername1]

cool math games? lol no I don't play games since I have asian parents

surely you play cool maths games or anything else in class instead of learning?

thats the tradition for everyone in year 7-10

mate your life is too short to be studying to become a doctor from now

 

[Constantspy977]

surely you play cool maths games or anything else in class instead of learning?

thats the tradition for everyone in year 7-10

mate your life is too short to be studying to become a doctor from now

well, I only watch like yt vids like dream and stuff, but rarely play games, nah I'm studying to hopefully get into a full selective bc I got into a partial but wanna get into full so yeah... doctor or actuary focus in year 10 onwards lol

 

[mikrokosmos]

yall can we keep the thread to just maths questions please haha i need to study for tomorrow and the questions here r good

 

[GanonRorf]

when finding CDFs do we need to write it in 3 part piecewise form or can we just leave it as is? thx