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Addition rule for probability | Probability and Statistics | Khan Academy 

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Venn diagrams and the addition rule for probability
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Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
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4 авг 2011

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Комментарии : 333   
@gavinmcmahan2840
@gavinmcmahan2840 4 года назад
I love how this took my 1 hour and 20 minute class and compressed it into an easier to understand 10 minute video.
@amansaini6908
@amansaini6908 11 месяцев назад
is this enough for gate for probability section??
@ht3111
@ht3111 9 месяцев назад
My class was 2 hours and 10 minutes
@G3TMORE
@G3TMORE 9 лет назад
I want to know who you are, because you are awesome to learn from. Thank you! If teachers were more like you, they would deserve higher pay.
@yrf3766
@yrf3766 8 лет назад
+Glenn Thweatt he is a guy who has graduated from Massachusetts Institute of Technology with a degree in Bachelor of Science & in mathematics,& electrical engineering, and computer science& later getting his Master of Science and electrical engineering and computer science. He also holds a degree in Master of Business Administration Harvard Business School
@-xxfxukr4g3xx-97
@-xxfxukr4g3xx-97 6 лет назад
Yeet
@turret1427
@turret1427 6 лет назад
Or to actually teach
@nrishiee5231
@nrishiee5231 5 лет назад
@@yrf3766 he also seems to have a pretty clear grasp on colour composition. its really pleasing to look at his notes.
@ekanthikamanoj9967
@ekanthikamanoj9967 5 лет назад
He is Sal, He opened Khan Academy a nonprofit foundation on the internet to teach kids math, reading,coding etc. I have Khan academy you can download and create a profile for yourself! it is really useful
@nobex7755
@nobex7755 6 лет назад
My teacher just teaches us like boom! Then u plus the boom! Bcs it has a boom! And then done! Then he tells us there's gonna be a test tomorrow and leaves the class. I need a teacher like u in ma school.
@hugoatm2770
@hugoatm2770 5 лет назад
Lmao
@evelioreyes5145
@evelioreyes5145 4 года назад
You took your test and...BOOM!!!
@jeanherbots1235
@jeanherbots1235 3 года назад
lmao ditto
@bikramadityarajendrapatra3447
@bikramadityarajendrapatra3447 3 года назад
@@evelioreyes5145 then parents see the report card and we get BOOM!
@pamfrease3462
@pamfrease3462 5 лет назад
whoever this godly mathematician is...hes a true blessing
@kaabfarooq6179
@kaabfarooq6179 4 года назад
Salman Khan, founder of Khan Academy
@ashwjn
@ashwjn 4 года назад
Kaab Farooq the actor 😱
@zoyakhoja2967
@zoyakhoja2967 3 года назад
the "lellow" was so adorable
@meaganboodoo315
@meaganboodoo315 7 лет назад
i realize from watching these videos that im not dumb lol this stuff is so simple. im not good at memorizing really but apparently i do remember examples, images and color. thats probably why i highlight entire pages lol
@CubicleComa369
@CubicleComa369 7 лет назад
Meagan Boodoo good for you(no sarcasm)
@samdemaidgroves7056
@samdemaidgroves7056 7 лет назад
VDAF : I AM TRIGGERED BY U!! THIS IS RAPE
@AjayMittur
@AjayMittur 6 лет назад
Same here haha
@Sam-pl4jn
@Sam-pl4jn 5 лет назад
Can relate!🤣
@Diyon_Lmao
@Diyon_Lmao 4 года назад
its probably the fact teachers do 1hour of explaining and we can't understand anything
@Kurlyheadt04070407
@Kurlyheadt04070407 8 лет назад
thank you so much...my professor hardly speaks any english and he made this look do difficult in class. you explained this concept perfectly
@MrRushSkies
@MrRushSkies 4 года назад
8:12 Please don't let me keep hanging. 8:19 Sigh, Perfection.
@chesnabosnic4915
@chesnabosnic4915 6 лет назад
Just want to say how thankful I am for these videos! They help me so much in understanding SO many different math topics! Great instructor and lessons! The different colors and repetition of phrases help a lot too! :)
@amansaini6908
@amansaini6908 11 месяцев назад
is this enough for gate for probability section??
@josephstalin8442
@josephstalin8442 2 года назад
So much better than my stats lectures. My professor rushes through topics and examples then if you forget how to do something he’s like, “we learned that already”
@pattgardens3961
@pattgardens3961 8 лет назад
Wonderful explanation! as a visual learner I found this example so helpful!
@nahidiac
@nahidiac 8 лет назад
Salman, this is great. You're great. May God bless you and accept these good jobs from you.
@KrishPlayz-uq9tg
@KrishPlayz-uq9tg 3 года назад
Yess
@andrewbennett3827
@andrewbennett3827 5 лет назад
I remember taking this my junior year of high school, now that I'm a junior in college and my major is business management, I got to take a business statistics course. I'm watching this to refresh the old memories.
@nibrasmasri8413
@nibrasmasri8413 5 лет назад
Great video as usual. Most valuable lesson I learned from it was to avoid repetition when counting overlapping sets. Since color and shape of object in this case are not disjoint sets, it is easy to make a mistake over counting. So, hasting into conclusion might be the most common mistake of calculating probabilities and counting.
@edwinnaranjo9435
@edwinnaranjo9435 7 лет назад
i cant see green or yellow...rip
@yawner6234
@yawner6234 5 лет назад
same lol
@amanninawe2375
@amanninawe2375 5 лет назад
144p users
@shanboss8296
@shanboss8296 5 лет назад
@@amanninawe2375 wow that just went straight through your head lol
@fizaabid6565
@fizaabid6565 4 года назад
@@yawner6234 what is the meaning of lol
@Husinator56
@Husinator56 4 года назад
@@fizaabid6565 laughing out loud
@zouraizkhan2467
@zouraizkhan2467 4 года назад
my teacher explained this perfectly but missed out on the part explaining with set diagrams. thank yu for explaining it
@proudindian8130
@proudindian8130 8 лет назад
Thanks a lot, it becomes easy to understand concepts from your videos
@shaniquewright1951
@shaniquewright1951 4 года назад
I actually get it now....should have watched this before doing my quiz
@kaitlynncurry4018
@kaitlynncurry4018 9 месяцев назад
I'm in a masters level stats class atm and this video helped simplify a question I was struggling on for like two days. I really liked the visuals and I ended up using the same concepts to solve a hw problem. Thank you for this! I'll be saving it for future use as well.
@kawa_bata
@kawa_bata 6 лет назад
Thank you Khan. I WISH every professor would teach like this. Jeez. Thanks again.
@jeaninewilliams7831
@jeaninewilliams7831 2 месяца назад
This video is awesome and just watching how simple you took away a lot of my anxiety. I love how you don't overword things. Thanks
@natasha1987252
@natasha1987252 10 лет назад
Thank you so much for your detailed explanation now l understand the concept well. :)
@sentient314
@sentient314 4 года назад
i can't get this word "lellow" out of my head
@geniusavage
@geniusavage 3 года назад
Thanks a lot sir. I did Biostatistics in my bachelors degree then i was much more younger and presumably I use to understand all of this. but that's ten years back: now i am in graduate medical school and my Medical Biostatistics teacher made everything so complex, However with your explanation everything is beginning to click again. God bless your sir.
@amansaini6908
@amansaini6908 11 месяцев назад
is this enough for gate for probability section??
@mrscheekymonkey24
@mrscheekymonkey24 10 лет назад
Thank you for your videos! They make Statistics so much easier to understand.
@yourboyfrannsayshi
@yourboyfrannsayshi 3 года назад
thank you so much!! I am a huge visual learner, helped me so much!!
@oybekjoraboyev7721
@oybekjoraboyev7721 5 лет назад
Thanks bro great video i had some trubles in my uni. Very undestandable video and easy catch the main ideas.
@SameerJoshi0395
@SameerJoshi0395 2 года назад
How beautifully it has been simplified..!!? Amazing.
@drithehilarious9856
@drithehilarious9856 2 года назад
Omg you need a reward yo, that’s how good of an teacher you are
@tonyakimrey4091
@tonyakimrey4091 7 лет назад
The pictures and the colors help so much! TY, TY!
@warrior100girl
@warrior100girl 6 лет назад
I'm a math tutor for the next semester summer 2018 in Computer Science and I'm just here to be inspired by all the good examples.
@xdgaming952
@xdgaming952 3 года назад
6:58 a weird thing he just did right here was add 13 and minus 5 whereas he could add 8 cause they were the remaining cubes left and yellow and yellow cubes were already counted in
@farhannoor3935
@farhannoor3935 7 лет назад
sage of the six maths
@dreamieangeletti6149
@dreamieangeletti6149 4 года назад
sage of quick maths
@_t3ab0ttles36
@_t3ab0ttles36 4 года назад
sage of quick maths
@zeeshanhaider148
@zeeshanhaider148 5 лет назад
Love this method... very very helpful.. Thank you
@goodgriefblockhead
@goodgriefblockhead 10 лет назад
Great job as usual. Thanks so so much :)
@markcisar4828
@markcisar4828 6 лет назад
Thank you Khan Academy for another easy to understand and share clip.
@chericha
@chericha 5 лет назад
Excellent explanation Mr. Khan. Thanks again!
@alexgrant-explainingmaths8077
You are one of the world’s greatest conceptual mathematics educator! Big up from Jamaica🇯🇲
@AdityaSharma-hg4tm
@AdityaSharma-hg4tm 9 лет назад
PLUS:i love your website!!its a good way to learn!!!
@sophiat2058
@sophiat2058 3 года назад
Can you please do a video on complimentary event with lots of examples please? I need to understand what the 1 represents.. does it represent the favourable event?
@johnpereira6235
@johnpereira6235 9 лет назад
Fantastic!!!!! Thanks for the great explanation.
@francesmarquez6554
@francesmarquez6554 3 года назад
It just clicked 😭 God bless this page. Online classes try to simplify things and all they do if confuse people 🥺 thank yoooou!
@SashaWasHereToday
@SashaWasHereToday 10 лет назад
He explained things really well & the video was kind of funny haha.
@ipwnnoobsable
@ipwnnoobsable 13 лет назад
Sal, it'd be really cool if you made a playlist on the stock market; hedge funds, futures, etc. Thank you, and I enjoy your videos.
@Aries-Athena
@Aries-Athena 11 лет назад
Thank you for this!
@shahd5874
@shahd5874 5 лет назад
2019! Thank you so much.
@Gbtx6
@Gbtx6 8 лет назад
I wish I could like this twice ahaha. Great job!
@SashaWasHereToday
@SashaWasHereToday 10 лет назад
I l-o-v-e how you explained things. The book made this simple concept seem much harder.
@No-tx9by
@No-tx9by 7 лет назад
Thanks, this really helped me understand more about probability, this really helped because I am in the U.K and I'm currently doing SATs.
@CoalChrome
@CoalChrome 5 лет назад
yes
@BasmaHadil-ww2ru
@BasmaHadil-ww2ru Месяц назад
Hi is thins enough for the sat exam
@ainekification
@ainekification 8 лет назад
Thank you. I love you.
@estella7417
@estella7417 Год назад
Wow! I understood it so well! I had failed to remember this formula before, and wasn't able to understand why it's just that way! But now, it's crystal clear. Thanks a ton! ❤
@flowingriver5695
@flowingriver5695 Год назад
Hey want to be study partner for khan academy? I'm self studying, feel unmotivated and lonely sometimes.
@amansaini6908
@amansaini6908 11 месяцев назад
is this enough for gate for probability section??
@umaldo7
@umaldo7 11 лет назад
Thanks!!! Keep up the good work!!!
@Arf-jk1dw
@Arf-jk1dw 3 года назад
You guys actually DESERVE to monetize your videos!!!
@sidraasif4667
@sidraasif4667 4 года назад
What a voice...!!!...what a way of teaching...marvellous 🤍
@user-su2wm3nz1e
@user-su2wm3nz1e 6 лет назад
It helped me very much thank you Mr.Khan
@geekxsir3610
@geekxsir3610 2 года назад
After an exam, and three lectures confusing lectures you explained this better than my professor! This channel is a godsend!
@amansaini6908
@amansaini6908 11 месяцев назад
is this enough for gate for probability section??
@lovebaking2503
@lovebaking2503 5 лет назад
you have explained the concept clearly.
@sharonsabol2062
@sharonsabol2062 8 лет назад
Thank you! Great explanation!
@hamzahsafawihasibuan7516
@hamzahsafawihasibuan7516 4 года назад
Great face
@internationalremixes6440
@internationalremixes6440 6 лет назад
no words to explain the worth of this video!
@wb40t3
@wb40t3 3 года назад
welcome dream to the champion's club forsenCD
@yourfellowhumanbeing2323
@yourfellowhumanbeing2323 3 года назад
Hahaha
@AgustinCabra
@AgustinCabra 2 года назад
Thank you so much, very clear explanation
@blueskysunz
@blueskysunz 7 лет назад
Best explanation, thanks!
@aravindhanveeramani6142
@aravindhanveeramani6142 8 лет назад
Hey there khan..., I have been looking at even more complex problems, in which the circle of the venn diagrams are concentric, and some times there are three circles, and then even more combinations and things get even more complicated, please make a video on that condition or if you already have made one please link me to it, I can't seem to find this anywhere in the internet Thanks
@asfnksenpai3508
@asfnksenpai3508 Год назад
Thank you! I was struggling with why do we need the additive rule? why cant we just add the probablities? but your video helped me.
@whiteeyedshadow8423
@whiteeyedshadow8423 4 года назад
"lello" lolly pops *proceeds to write the above message in green*
@xenonthemurderer
@xenonthemurderer 4 года назад
Sorry, what we're u sayin'?
@manwithtie6708
@manwithtie6708 Год назад
it is easier to think each individual outcome as a single probability rather than a similar overlapping outcome which makes it weird for simple calculations, thanks for the video.
@janinebisschoff8432
@janinebisschoff8432 11 лет назад
Thanks a lot Sam, it really helped me to unserstand this stuff
@geraldjinx
@geraldjinx 4 года назад
it's sal
@dopentight
@dopentight Год назад
I remember watching this video to prepare for an Engineering Stats exam in 2018 (got an A), now I'm watching it again to prepare for the FE.
@MrNeverataner
@MrNeverataner 13 лет назад
@MrNeverataner oh i get it already... thanks man! really helpful
@SH-os1ck
@SH-os1ck 5 лет назад
You're amazing sir!
@chiedzarugoho2675
@chiedzarugoho2675 Год назад
He actually teaches better than than how my teacher taught it....thank you so much🙏❤💜
@amansaini6908
@amansaini6908 11 месяцев назад
is this enough for gate for probability section??
@vincerossignolo6702
@vincerossignolo6702 4 года назад
This helped thank you.
@pranayblue
@pranayblue 4 месяца назад
Well explained, as always..
@AdityaSharma-hg4tm
@AdityaSharma-hg4tm 9 лет назад
nice! u guys are good!!!
@statisticianclub
@statisticianclub 3 года назад
Very informative
@danielkedwards54
@danielkedwards54 6 лет назад
this is really helpful
@zionishereee
@zionishereee 6 лет назад
How would you add a probability such a 1/2 a chance of flipping a coin and picking a marble out of a bag with 10 marbles and it's red and you want to find the probability of the coin flipping and red marble together?
@narapuram2
@narapuram2 5 лет назад
Nice video! But can u please do a video on 3 circles?
@johnbake9304
@johnbake9304 6 лет назад
a question please...if i have this 3+3. are the numbers expressing the union of two sets with an element in it which is the number 3? or the union of two sets with 3 elements in it
@NaveenSharma-mz6tt
@NaveenSharma-mz6tt 3 года назад
Thanks For Sharing this beautiful content! :)
@fcinternetmarketing
@fcinternetmarketing 11 лет назад
Great voice.
@kc2saxena
@kc2saxena 7 лет назад
Khan the savior.
@BafanaButhelezi-vh7zs
@BafanaButhelezi-vh7zs Год назад
I LOVE THIS CLASS 😭
@haldur86
@haldur86 Год назад
Great vid, love it! Though shouldn't P(A or B) have XOR, P(A XOR B) ?
@danielmoon3681
@danielmoon3681 2 года назад
Learning this in class... did not expect it to be as simple as you explained it LOL
@MuhammadQasim-oo7yq
@MuhammadQasim-oo7yq 6 лет назад
Khan and as well as Muslims are the best.. great job Salman Khan..your name is khan and you are a Teacher. .. superb
@Monobob74
@Monobob74 13 лет назад
his is infinatley helpful for math competions
@tharunishadi3980
@tharunishadi3980 12 лет назад
thank you !!!
@mubangachibamba5164
@mubangachibamba5164 2 года назад
Thankyou for this
@eloisejuguilon4473
@eloisejuguilon4473 6 лет назад
thank you for this video. but i wonder why did you subtract 5 in the probability of yellow or a Cube? pls
@kebenadebela2106
@kebenadebela2106 4 года назад
very appratiate
@zeyad1zeyad934
@zeyad1zeyad934 7 лет назад
thanks
@SalK-3S3K
@SalK-3S3K 3 года назад
What a teacher Khan is👌🏼👍⚡️💥!
@mcfrazier5067
@mcfrazier5067 6 лет назад
brain just exploded all over...... lol great video tho! **putting it back together now**
@thepurplelefant
@thepurplelefant 13 лет назад
@senakujin no, its the (posibility of getting heads(1)+ the posibility of tails(1))- posibility of getting both(1). so you get 1
@fawreez3784
@fawreez3784 2 года назад
TYSMM!!!
@wassera9093
@wassera9093 6 лет назад
You explained better than my stats prof.
@surbhimantri1
@surbhimantri1 9 месяцев назад
thanks!
@Emily-ck7en
@Emily-ck7en 13 лет назад
Can you explain the multiplication rule for probability ?
@whatsupwithtorii
@whatsupwithtorii 4 года назад
Thankx so muchhh 💖💖😫🤞🏾🤞🏾