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Coin flipping probability | Probability and Statistics | Khan Academy




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Title :  Coin flipping probability | Probability and Statistics | Khan Academy
Lasting :   9.20
Date of publication :  
Views :   818 rb


Frames Coin flipping probability | Probability and Statistics | Khan Academy





Description Coin flipping probability | Probability and Statistics | Khan Academy



Comments Coin flipping probability | Probability and Statistics | Khan Academy



Energy
Who is here trying to jam everything in you’re brain😂😂
Comment from : Energy


dean aldridge
One person, one coin, first flip 50/50 chance What if you change the coin, or the person, or both on the next flip? If both, would that not change the probability back to 50/50?
Comment from : dean aldridge


Mrs Sims
My kid doesn’t understand anything about this Make probability easier
Comment from : Mrs Sims


11-BERKELEY ROY, YURIAH KELLY
i really cant understand the lesson when it comes to tossing a coin
Comment from : 11-BERKELEY ROY, YURIAH KELLY


Gerald Collins
I'm just trying to get either 5 heads or tails in a row Seems impossible lol
Comment from : Gerald Collins


Mark Red
V1
Comment from : Mark Red


Baker World
Let's saybrWe have a betbrI have chance to flip coin #3 times to bet head or tail ( even if it has only 2 sides)brHow many percent of winning chance I have to bet head or tail?
Comment from : Baker World


ayman kizito
sorry but you talk too much and fast
Comment from : ayman kizito


Toxic GD
I did it by accidentbrbrbrbrbrbrShould've recorded
Comment from : Toxic GD


Laxmikanth
I dont understand iam 6th class my name is Apranav
Comment from : Laxmikanth


JuBaer AD
I was kinda stuck there You saved my time
Comment from : JuBaer AD


Oskar Kahar
What if it was Bitcoin instead
Comment from : Oskar Kahar


Oskar Kahar
Cap
Comment from : Oskar Kahar


gabebateman
Bills studying this next year
Comment from : gabebateman


Jerry the duck
Most people say that if you flip a coin you have a 50 chance of landing of heads, and a 50 chance of landing on tails But some peoples say you have a 51:49 chance depending on the side the was upright Well both of these theory’s are wrong When flip a coin you have to account for every possible situation that could happen There are actually 3 possible outcomes of flipping a coin The first outcome is landing on heads The second out come is landing of tails The third outcome of flipping a coin is actually landing on the side, with both head and tails facing sideways Now as we know this is more rare for this to occur But how rare? And how does this change the probability of a coin landing on head vs tails
Comment from : Jerry the duck


Brett Unger
A lucky friend…used to wanna see the coin just before flipping…he’d call the bottom of the coin…if math explained life… why did Einstein mention God…
Comment from : Brett Unger


Sergio M
Very simple question: I flip a Coin twice, what's the chance to get the same result twice?
Comment from : Sergio M


she is tranquil
my head hurts
Comment from : she is tranquil


कृम्शन स्ट्राइकर
Nice tutorial - friendo
Comment from : कृम्शन स्ट्राइकर


Hannah
Can someone explain to me why the answer to this question is 4?brbrApple got coins from his pocket which accidentally rolled on the floor brIf there were 16 probable outcomes, how many coins fell on the floor? brbrThe answer is 4 Just wonder how the answer was gotten
Comment from : Hannah


Hannah MacIntosh
Surely there is a way to do this without writing everything out There must be formulae for that
Comment from : Hannah MacIntosh


Madeleine Lavelle Ericsson
thanks a MILLION, i needed thisssss
Comment from : Madeleine Lavelle Ericsson


RumpelstillKills
I remember this I learned it from here
Comment from : RumpelstillKills


nothingtralala
I guessed 19 coins in a row Kiss my face 😚
Comment from : nothingtralala


hey bro
Heads or tails, a tossed coin, a metaphor for the uncertainties of life Of course, the wise player, always cheats
Comment from : hey bro


Him Bike
What are the odds probability that brComputer glitches only help Biden ?
Comment from : Him Bike


availablehage
My maths teacher should just play these videos
Comment from : availablehage


43Cubes
What if it land on the edge?
Comment from : 43Cubes


Cant think of name Yeah
You have a 1 in million chance You try a million times My math says 64 percent chance of winning Is that correct?
Comment from : Cant think of name Yeah


BLX gaming
Thank you
Comment from : BLX gaming


aurora
thank you! i get it now
Comment from : aurora


Katu
8:28
Comment from : Katu


Xuân Thủy
how many times should a coin land on heads if you flipped it 20 times
Comment from : Xuân Thủy


NITiAN
Anyone watching this before exam2020brThumb upbr👍👍👍👍
Comment from : NITiAN


jestbrain e
B
Comment from : jestbrain e


Elijah Jean
Good Morning You said 3 flips where did the 8 counts come from?
Comment from : Elijah Jean


TeamJella
So Gavin is right
Comment from : TeamJella


Anders Pickardt
So what if something has a 18 chance of happening, and you try 2 times, what would your chance of succes be?
Comment from : Anders Pickardt


Mighty Red Stallion
Remake the video when you're not drunk
Comment from : Mighty Red Stallion


Mariam
You are amazing!
Comment from : Mariam


Fun Hax
What is the probability of getting a girlfriend?
Comment from : Fun Hax


Benawa Java Permadi
What's the probability of getting 6 of the same sides in a row in 100 coin flips?
Comment from : Benawa Java Permadi


J_ 524
So can you tell me if this is right?brSay I want to know the prob of having at least one boy if I have __ kidsbrFor one kid, the poss are brbbrg so 50brFor two kidsbrgbbrbbbrggbrbg so 3/4brbrbrFor three kids brbgbbrbggbrgbgbrggbbrbbgbrgbbbrgggbrbbb so 7/8
Comment from : J_ 524


Clever Response
I am a professional equities trader and these same concepts are used for trading probabilities This is my first time on your channel so if your not already a trader perhaps you should look into it Trading is all about probabilities and really just a numbers game, seems like you might be quit good at it
Comment from : Clever Response


Shila Tz
Why does he multiply 05 *0,5*0,5? It doesnt make sense in my head, why isnt it 2 when there is two posibilyties each time?
Comment from : Shila Tz


Aashish Sah
Sir please brSee herebrbrbrA fair die is tossed eight times Probability that on the eight throw a third six is observed is
Comment from : Aashish Sah


Kevin Frost
Okay but I'm not going to write 1/2 * 1/2 * 1/2 5184 times Is there not a way to write that in a simpler way?
Comment from : Kevin Frost


Jeff Ciaccio
Here is where i start going wrong:brWhat is the the prob of at least 1 H if we flip a coin 3 times? brbrP(1H) + P(2H) + P(3H) br1/2 * 1/2 * 1/2 (Prob of H on 1st * Prob of tails on next 2) br+ 1/2 * 1/2 * 1/2 (Prob of H on 1st 2 * Prob of tails on next 1) + br1/2 * 1/2 * 1/2 (Prob of all H's)brbrI know I'm missing a combination or permutation somewhere :(
Comment from : Jeff Ciaccio


Bob Hart
Scenario restarts at the beginning each time 50/50
Comment from : Bob Hart


Joseph Kreifels II
essentially, you could have done: (1 - (1/2)^10)*100
Comment from : Joseph Kreifels II


Pawan Jadhav
Find the probability that it took exactly 10 flips
Comment from : Pawan Jadhav


sippy pepsi
Ok so how exactly did you get one half
Comment from : sippy pepsi


Logan Def
What about edge?
Comment from : Logan Def


ThinkPink DC
Thc
Comment from : ThinkPink DC


Danilo Katzaroff
Nice math there! Does someone know how to code this probabily in R?
Comment from : Danilo Katzaroff


a
Most of the relationships of today have 099 probabilty of breaking up one day in future
Comment from : a


a
Sal is one of the most hardworking men on this planetHats off sal
Comment from : a


Andrew Dixon
This is super useful to know for blackjack :P
Comment from : Andrew Dixon


Ludwig
anyone wishing to test themselves on this, work out the probability of not getting a 6 in 3 rolls of a fair 6 sided dice
Comment from : Ludwig


Evan Rai
Thank you for helping me out😃
Comment from : Evan Rai


G S
😎 loved it
Comment from : G S


Alin Apostol
isn't it 099 ?
Comment from : Alin Apostol


Obese Gaming
Having a hard time in stats trying to find the probability of getting a head
Comment from : Obese Gaming


Obese Gaming
What is the probability of me getting a head on youtube Sal?
Comment from : Obese Gaming


Jaczad
what is the probability of having an alien friend?
Comment from : Jaczad


Yash Arora
what is the sample space for 10 coins tossed together??
Comment from : Yash Arora


Ashu Babbar
What if it is atleast 2 heads in say 6 flips
Comment from : Ashu Babbar


Martin Mystery
Why you don't write (1/2)^10 instead of writing it 10 times :p
Comment from : Martin Mystery


Brescalofrio
ged prep
Comment from : Brescalofrio


Moh
OMG THANK YOU brmy math exam is in literally 2 days and u saved me
Comment from : Moh


Thomas P
So why is there an 1-
Comment from : Thomas P


Kubz
I kinda get it thank you so much  Sal Khan Academy 
Comment from : Kubz


Kubz
Consider the probability formula, and explain why it is not possible to have a probability of an event greater than 1 HELP PLS
Comment from : Kubz


Geofrey Banzi2
99 problems, but getting heads ain't one Boom
Comment from : Geofrey Banzi2


Richie Harrinarine
Thank you! I finally understand it good :)
Comment from : Richie Harrinarine


Josh Conant
Head ON a college? Slim
Comment from : Josh Conant


Gabriel11235
What is the probability of getting head on college?
Comment from : Gabriel11235


William Xu
what is the probability of getting at least 2 heads in 3 flips?
Comment from : William Xu


Joel Himanen
Getting head at least once
Comment from : Joel Himanen


smitrib
WOW "at least" problems are so much easier now They used to be the hardest thing, but now they seem like a piece of cake! THANK YOU SO MUCH
Comment from : smitrib


nathuwjohn
How'd you get that TI-85?
Comment from : nathuwjohn


078matthijs
Snipers get more head :)
Comment from : 078matthijs


blakerwalk
@Spyez I'd much rather get tail than head
Comment from : blakerwalk


Charles Spicuzza
@kenufak sharpening the saw
Comment from : Charles Spicuzza


luky_is_here
Albert Einstein once said: “If I had an hour to save the world I would spend 59 minutes defining the problem and one minute finding solutions” This video is about this attitude
Comment from : luky_is_here


amin mozel
i watch your videos because they are entertaining
Comment from : amin mozel


price22
Salman knows this Title is WAY too suggestive, it's become common knowledge now
Comment from : price22


Not Oprah Winfrey
Aaaaaand, it is once again demonstrated that my mind is filthy
Comment from : Not Oprah Winfrey


Iyas
salman khan doesn't need to make this video he has 100 of getting heads
Comment from : Iyas


Sami
I wish I knew what you were talking about, guess I'm just too dumb
Comment from : Sami



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