Comparing theoretical to experimental probabilites | 7th grade | Khan Academy

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Compare expected probabilities to what really happens when we run experiments.
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Grade 7th on Khan Academy: 7th grade takes much of what you learned in 6th grade to an entirely new level. In particular, you'll now learn to do everything with negative numbers (we're talking everything--adding, subtracting, multiplying, dividing, fractions, decimals... everything!). You'll also take your algebraic skills to new heights by tackling two-step equations. 7th grade is also when you start thinking about probability (which is super important for realizing that casinos and lotteries are really just ways of taking money away from people who don't know probability) and dig deeper into the world of data and statistics. Onward! (Content was selected for this grade level based on a typical curriculum in the United States.)
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[@kinetic_krown]

Who else is watching this because they can't go to school because of the coronavirus?

[@ssjbros3958]

Me

[@admiralthecat]

Literally my whole school district

[@danielledoeswhat]

My entire grade.

[@masterdoge987]

Mr. Anonymous me

[@weirdocjd1239]

me

[@snipestream2606]

Anyone assigned to watch this for online school?

[@user-dx9zu2kb3o]

me sadly

[@pwwak]

me

[@Gazz2990]

me

[@calebmukasa2532]

Me

[@gingerninja1080]

yep i am

[@Contradel]

This is great! Soon taking a course on probabilistics, and some of these can sure help. You do sound a bit tired though Sal.

[@K0smicKiwi]

thank you sooo much! I have a test (possibly) tomorrow , and my teacher is extremely confusing! this helped clarify things , thank you! ♡

[@dawnrhee8533]

Kosmic Kiwi 🥝

[@pinkpufferpig1410]

Kosmic Kiwi Oooof I have a test tomorrow on this and since our original teacher left to have the baby, we had a substitute teacher who didn't explain A THING.. so now I HAVE TO TEACH MYSELF PROBABILITY AT 2 AM BECAUSE I REALIZED IM GONNA FAIL THIS TEST IF I DONT TEACH MYSELF

[@xxbandridgexx5033]

Exactly my situation

[@v0id3333]

Kosmic Kiwi your pfp 😂 oh I love beebo

[@10kwithnovideochallengemem91]

Kosmic Kiwi My teacher is confusing too Life sucks

[@ilovepalitaw]

right now, i am doing a math test. i literally dont know anything about probability because u dont understand my teacher. lets hope i do well 🥳

[@reema4605]

did you do well yumemiru?

[@salmonella6051]

my teacher refuses to explain the assignment to us, and shouts at us if we ask questions 👌👌

[@tattoos.pretty.eyesthickthighs]

Tomorrow we will be having an exam,, wish me luck ✌

[@fakestories1375]

Good luck 😂😂😂 how about you wish me luck bc my math exam is Tom and it’s 9:55Pm and am sooo sleepy and I still have so many topics to read

[@chloejwylie]

We stan my teacher, who decides to give us this, without explaining it.

[@salmonella6051]

same 0_0

[@ms.parisplays3460]

Thanks! This helped so much better than my teacher

[@denology4539]

is he replacing the marble that he chooses back in the bag?

[@barbodnikzad9906]

Im still unclear about what the difference between theoretical and experimental probabilities is.

[@sarapetkovic7823]

Theoretical is what the theory tells you and the experimental is when you actually do the experiment and get your own results.

[@camrenmcfadden6911]

Barbod Nikzad experimental is what physically happens and theoritcal is what should happen sorry for spelling

[@harwinderthind3569]

Theoretical is a theory you make about the answer from the facts you have (what should happen)and experimentally is the the outcome (what actually happened)

[@aly6876]

Barbod Nikzad sammeee

[@pinkpufferpig1410]

Sara Petkovic for experimental you could also do a stimulation (ex random number generator)

[@Ella-ps8hr]

Still a bit confused, but most of it makes sense now. Thanks!

[@fashionvella730]

are you alive?

[@edwardojeda4458]

@@fashionvella730yes

[@user-jo6zd6ng3v]

@@fashionvella730 hehe

[@benjaminhicks2028]

thanks just got a 12/12 on my 4th grade mathamaticas test thank you.

[@teviislime9527]

Great work this helps a lot

[@lilbob126]

Thank you so much. I had anxiety for my exam topics and this helped me clear my doubts

[@randomhuman731]

I have a teacher called Mr Khan and it’s a running joke do you run khan academy and he used this marble example And I still have no idea if he actually runs this or not

[@fazalahmed389]

Wonderful explanation

[@user-hd4ii7xz8q]

Thanks for your teaching it has helped me

[@alansworld7292]

OK so my teacher shows these to me in class and after watching video game videos in my what to watch box it appears strange......

[@h1hna367]

This is really helpful, thanks.

[@shalommussie7883]

thanks my test is tomorrow and this was confusing but know surely I'll pass!

[@jaksonganz5849]

Well good luck in English.

[@shalommussie7883]

Thank you very much:)

[@dreetv]

What board does sal use to write on?

[@KhloeWilson-cb9cf]

Forgot everything my teacher showed me and i have a test Friday

[@colleenweigand3697]

this helped me on my math test

[@fakestories1375]

Thx so much

[@sevster8324]

Online school....lets gooo.....

[@jasonsayangod3560]

If there 100 marble 50:50 Its 1/2

[@HeliosPlayz]

Summing up a video when you are doing probability with something like flipping a coin or picking a color (of 2) out of a bag of you keep trying 100 times even 1million you will eventually get half but it could even take a a long time depending on how much time you have

[@mayrasalazar4538]

I'm still not sure if I get it

[@xoxokiller20]

same

[@amalel8938]

Very good sal

[@maddiellewellyn7175]

so the experimental isn’t the one that you should use as your answer? you should go with theoretical? i’m so comfused

[@iaintdoinallat]

because of luck? for example even if you have a probability of getting magenta, blue, magenta, blue it is not guranteed and you'd get something like magenta magenta blue magenta

[@heheheha651]

🙏 thx

[@PrimeGaming255]

This guy talking about probability: Superposition: I'm aboutta end this man's whole career

[@ellarich6077]

Experimental is the one that gets me

[@gualdarramagarcia]

His voice tho 😳

[@burhansivri1203]

why you didnt say the answer

[@madalynnsepulveda1795]

sounds like a white morgan freeman

[@jessafresa]

Thank you so much! I always watch your videos after my teacher gives us the lesson; it gives me so much more clarity. You're the reason I'm passing Algebra 2! Forever grateful! ♡

[@shea127]

did he actually go over theoretical probability or am i tripping

[@bobthegod0924]

i question everyone i thinking ,why am i here? the answer that stupid virus

[@swfsql]

SO magenta, SO blue.. wow

[@revanthtummalapalli7188]

very kek, Mr khan, can we get a poggers in the chat?

[@nidakhan3171]

i have a test on 1st septmber m really not prepared for it can you plzz help me?

[@celynfelix8664]

Thank you so much

[@maureenmccormack5989]

Okay now I know how to do 1/2(I already knew that) but how would I say do six total blocks in box 3 blue 2 red 1 yellow what’s the probability of drawing one of each color I am so confuzled

[@rastap2721]

This is late but..... for blue 3/6 50% 2/6 for red 33.3% . 1/6 for yellow 16.6

[@Loloo-oy9is]

Ur explanation is better than my teacher😂

[@vidyashetty5768]

Thanks

[@hyptexX]

that bag is an anomly

[@Ian3485.]

i still don't understand how horrible teachers still have jobs when people on youtube are 10 times better at explaining things AND know how to explain it in a way where it makes you remember the material

[@LeannaChow]

Yeah, I learned more with this video in 7 mins while my teacher who taught it for 1 hour was just confusing everyone 😭 which is the reason why I'm here

[@fairyjimixnk7420]

Thanks a lot! I was absent for one day when our teacher taught us this lesson, so I was having a hard time understanding! This really helped me 💜

[@lohveli9482]

I have no clue...

[@lentmain]

I have a problem.... Why is half a circle Pi..? And a whole circle 2 Pi..? I understand single point tangent.. What is sine,, Cosine..? This has messed me up since high school.... Please explain...?

[@azadkaya]

He has a lot of videos about that. Go into his channel and explore

[@Roleplayer40K]

It has to do with circumference. The circumference of a circle is calculated by Diameter multiplied by Pi. Since it isn't very regular that you use Diameter when you go into more advanced math (you usually use Radius), you use 2 Pi because multiplied with the Radius it give the cirumference.

[@lentmain]

Gaztinerag Thank you for the info... I can more easily see things when they have a rational approach... 2 pi rr is the circumference formula... Now if I could get the jest of Sine and cosine... More reading.... Thank you again...

[@Roleplayer40K]

No problem ^^ Glad to help

[@fx.fas.]

who else went through the comments the whole video and didnt pay attention

[@ddoriz34]

The only reason I’m watching this is because I have an online exam tomorrow 💔💔

[@asok3116]

ARMY BTS me to

[@ddoriz34]

ᗩᗰᑎᗩ ٰ oop- my name is Amna too 🌚

[@asok3116]

ARMY BTS what is your nationality🤗:)??

[@tattoos.pretty.eyesthickthighs]

same 💀💀💀

[@SheLearnsChannel]

he said "would of" instead of "would have"...sorry i'm not a grammar nazi but it was just bothering me a lot :/

[@darcyvvalencia]

He IS saying "would have". It's just because of his accent, that's why it sounds like "would of".

[@snipestream2606]

haha same

[@dnknonsomebody6405]

I am so dead....

[@biscuit6116]

think about the present, not the inevitable past

[@amalel8938]

We think about today not tomorrow not yesterday today

[@TheRichamayank]

Is it just me or does this dude sound like thor ???????

[@sakshamrao6581]

It's just you

[@jamestill4172]

Need help understanding the difference? It is theoretical (should be 50%) before it is experimental (it was 70%). Theoretical is pure reason (while subjective is guessing), and experimental is when you experiment to find the solution.

[@jamestill4172]

Theoretical: Flipping a coin should result in heads 50% of the time Experimental: I have flipped the coin 10 times, and it landed on heads 5 times.

[@walterdaman7422]

Video Unclear, Im in my Toaster Oven

[@quandaledingle6207]

Jakey i know its you

[@gabriellagutz]

wow, this didn't help at all!!!!

[@Aaaaaa-zq1tu]

I cried in class because I couldn’t do this and my sub wouldn’t explain good :)

[@BlueBassNight]

how are you going to take ten thousand marbles out of a bag with 100 marbles in it

[@kenyonhall6734]

when u take one out u put it back

[@anusuya8780]

what

[@theintro5121]

why are we learning this in grade 12?

[@pinkpufferpig1410]

The Intro I learned this grade four

[@anusuya8780]

we are learning this right now in grade 7 my test is tomorrow

[@yazinal-janabi5199]

I’m in grace 2

[@hxiley1453]

Teacher had us print out work at home cuz of the corona virus, and here I am watching this vid 😂

[@ssjbros3958]

Hailey Edwards same

[@nauka7565]

Youre just very lucky lol

[@somekid5670]

All students like this post

[@edempire7172]

SIR I'm in 2nd year high school and the answer was right but not the explaination. Its when you put your hand in you have ½ chance of getting a magenta and blue marble

[@azizkash286]

god joined

[@landonm.9657]

BRUH I HATE THIS ONLINE CRAP BECAUSE OF THE STUPID CORONAVIRUS

[@ssjbros3958]

Landino000!!#skater MAAS ik right

[@unitelanka]

so what would be the probability of getting 7 magenta and 3 blue in 10 trials?

[@jannarden5872]

7/10 and 3/10

[@dawnrhee8533]

JZoidberg there would be a good chance of being able she would have been the first time she was able she was the one who has a great time she is the only person I want for the best and the most important things I could ever do is to get a better life and be more

[@dawnrhee8533]

JZoidberg eub

[@dawnrhee8533]

JZoidberg no

[@bassamsalma4097]

There was a bag with 100 marbles SUDDENLY the bag had 10000 freakin marbles .................😂😂😂😂👌

[@spoofx7105]

Bassam Salma no, it still had 100, but they did 10,000 experiments which means they pulled out a marble noticed the color put it back in shook up the back and picked another marble 10,000 times

[@jacobclashofclansandclashr6066]

Me aint nots good at grammar

[@anusuya8780]

oh noes

[@biscuit6116]

OK

[@AsteroidBK]

Imagine having to take online school

[@nidakhan3171]

hlo sir

[@allisondayzie3224]

my comment is most recent :P

[@FraudFelix]

Huhhhhhhhhhh

[@magicaldevices9932]

ummmmm i still dont get it

[@sxlty.flower3368]

who else is here when the likes where 666

[@quynhquyen9737]

I learned nothing new wasted 7 minuets of my life jk jk jk I don’t have a life....

[@frankminnick3396]

Wow that is sad you should be more thankful for your life and everything you have

[@SteelyFl1nch]

this farts like so bad

[@snipestream2606]

Also who has time to do 10,000 trials? If that is you, no offense but go get a life!?!?!?!

[@mia.1462]

Who else is here because of Ms.price?

[@lindaniel6024]

I boredddddddddddddddd

[@oraleemetschan4350]

The chief vegetable conjecturally return because volleyball conceivably roll in a bright litter. filthy, big computer

[@RozzyGuard]

If only you were Indian

[@smilewithrajveer2020]

I am

[@kykise1395]

It really pisses me off when you keep repeating stuff just get to the point dude