Thank you for such a helpful videos, Sir. P.S In 2:50 minutes in the video there should be TTTH for the 4th possibility.(3rd and 4th are written the same)
Helpful videos. You explain beautifully. I am now a little lost as in the video before this you multiplied and in this one you're adding. Please explain when does one multiply and when do you add. I can't tell the difference about when to do Multiplication and when to do addition with probability.
In case anybody else is confused, 2 ways of arranging the two heads. P(HaHbTT) is the same as P(HbHaTT). P(THaTHb) is same as P(THbTHb) is you remove the a and b and view them as identical objects. In which case P(HHTT) is the same as P(HHTT) isn't it? So you have to remove all the extra possiblitites. Sice we only want one of all the two scenarios we divide all scenarios by two.
Khan, can u do a video on stars and bars, im in 8th grade training for a math competition and I need help understanding what the stars and bars formula is.
Actually on the video with the yellow and green cubes and spheres you made a mistake by double-counting the number of yellow cubes. How come you didn't correct it in some way?
because the first place has taken by the first head ( sorry for my bad english , and i know i am 6 years late , but hopefully its gonna be useful by someone else )
@@Rdffuguihug wrong, why? When you introduce a sequence/consecutive, you must also factor the condition of having a head before having another head. But independently without a prior condition of having a head then yes, it is 1/16
@@Rdffuguihug Am interested here, It seems I got the question wrong. This was my understanding. What would be the probability of 4 heads occurring consecutively in x number of tosses.
i don't know how to live without you.... every-time i got stuck in class...i tell my self ..don't worry khan is there... owe you....
hahaha i love the grammar frustration with the "heads" :)))
I love hearing you have little arguments with yourself.
You're the man, Sal.
Thank you a million for your simplicity, clarity and not skipping over anything! Thank you! Thank you! Thank you!
Thank you for such a helpful videos, Sir.
P.S In 2:50 minutes in the video there should be TTTH for the 4th possibility.(3rd and 4th are written the same)
U REALLY FIND IT
GOOD
Came here to say this
love it when i see 'uploaded by khan academy' on my youtube front page. Good too know khan is still enthusiastic and alive.
did you write that with mouse? my god youre good (y)
Dear Sal,
Please cover advanced stuff like markov chains etc also.
thanks.
Sal
On the website, it says "Watch. Practice. Learn almost anything for free."
What subjects will you NOT cover?
is foreign language one?
Thank you for saving my Finite Grade!
Very nice example
Helpful videos. You explain beautifully. I am now a little lost as in the video before this you multiplied and in this one you're adding. Please explain when does one multiply and when do you add. I can't tell the difference about when to do Multiplication and when to do addition with probability.
Do u get it now? 😂
Pls tell me the difference if u do
YES, heads, that's why I failed the prob exam, they wrote head instead of heads!
Great work.
9:13
you're a god!
Although I have figured it out, it was not immediately clear to me why multiplying 4 places by 3 places to get 12 scenarios.
The 4th one should be P(TTTH)
😂😂😂
Can use combinations (permutations and combination)
Grade technique
the thing i still don't understand is why u divided all the different scenarios by 2 ?
In case anybody else is confused,
2 ways of arranging the two heads. P(HaHbTT) is the same as P(HbHaTT). P(THaTHb) is same as P(THbTHb) is you remove the a and b and view them as identical objects. In which case P(HHTT) is the same as P(HHTT) isn't it?
So you have to remove all the extra possiblitites. Sice we only want one of all the two scenarios we divide all scenarios by two.
2021😁✌️
Can't you just use the binomial probability equation i.e. P(X=k)=nCk(p)^k(1-p)^(n-k)?
Can we tell how many times the coin has to be flipped in the set of four times to come out true for exactly one head?
Khan, can u do a video on stars and bars, im in 8th grade training for a math competition and I need help understanding what the stars and bars formula is.
Timothy Green yes please
@perlz0 Never mind... that's what the next video is :P
Probability of me getting a head on the first date = 0/1 = 0
Probability of me getting a head on the nth date = (n x 0)/n = 0
probability of heads in 4th flip fail 2:39 ... should be "P (TTTH)" not "P (TTHT)" again
Braiden Cantelon ya noticed
Actually on the video with the yellow and green cubes and spheres you made a mistake by double-counting the number of yellow cubes. How come you didn't correct it in some way?
2020 anyone
Thumb up
Not the video I was looking for ;)
Guys i just realize you can apply combination here
I am little confused can anyone help me?
Am i the only one who hears his hard disk reading?
yes
Yeah :P
What grade is this
+Eriana Freeman 9th
If there's four places you can get the head in then why can I only find three places that it fits..?? :S
because the first place has taken by the first head ( sorry for my bad english , and i know i am 6 years late , but hopefully its gonna be useful by someone else )
How many coin toss to have 4 heads consecutive ?
@@Rdffuguihug wrong, why? When you introduce a sequence/consecutive, you must also factor the condition of having a head before having another head. But independently without a prior condition of having a head then yes, it is 1/16
@@sonyvaio1281 1/16.
@@Rdffuguihug Am interested here, It seems I got the question wrong. This was my understanding. What would be the probability of 4 heads occurring consecutively in x number of tosses.
@@sonyvaio1281 my intuition tells me P(getting four heads _consecutively_ ) should be less than 1/16. Have you figured it out????
@@samuraijosh1595 for getting 4 consecutive heads probability will be 1/16
กษัตริย์
i really frickin hate probability
Just one more month for boards. You just gotta study bro....
@@samuraijosh1595 Boards? what do you mean?
@@harshp2577 Your name sounded Indian so I thought you were Indian and finals(boards) are coming up in march in India........
@@samuraijosh1595 yea I'm indian. INDIAN AMERICAN. Gujarati specifically 😎
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