Statistics Lecture 4.4: The Multiplication Rule for "And" Probabilities.

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Professor Leonard

Professor Leonard

12 жыл бұрын

/ professorleonard
Statistics Lecture 4.4: The Multiplication Rule for "And" Probabilities.

Пікірлер: 129
@lsou4592
@lsou4592 8 жыл бұрын
I wonder if he read through all the comments or not , but I just want to let Mr.Leonard that you are the best math teacher I've ever met. You are a talented and very kind teacher. I wish I have seen your videos sooner because I would have done better at math in high school. As now , I am a freshman majoring in business and I am struggling in Statistics because my professor seems not to devote himself into teaching at all. My professor covered the probability part for only about 3 hours for both the lesson and exercises, in contrary, Mr. leonard spent almost 10 hours for this chapter. Thank you so so so much for all these videos ... I know I will survive my up coming midterm. ( a comment from 5000 miles away )
@ProfessorLeonard
@ProfessorLeonard 8 жыл бұрын
+Sou Ling Thank you very much for the comment! I wish you the best on your midterm.
@samanthapikus3178
@samanthapikus3178 7 жыл бұрын
Where most lecturers leave out vital key elements that pertain to understanding, you seem to know what confuses a student and you cover those. Thanks for the Vids. South Africa thanks you.. : )
@kuhleswaggkatangana5536
@kuhleswaggkatangana5536 7 жыл бұрын
Samantha Pikus true that.
@Freedomind901
@Freedomind901 2 жыл бұрын
agree
@hermanmokgope3011
@hermanmokgope3011 Жыл бұрын
He's the best!
@beckywingate9548
@beckywingate9548 7 жыл бұрын
I'm currently doing my nursing degree via distance learning and have stats this semester. Initially, I was feeling like the semester was going to be a disaster. There was no instruction from our professor other than read the chapters and do the review questions. Reading my stats textbook was like reading a foreign language. Then someone told be about your lecture videos. What a lifesaver!! Your teaching methods are awesome, taking examples from everyday life so that the student can relate to the information. And lots of humour to make it enjoyable. Thanks a million for making these available!!
@AlyssaRobinson2092
@AlyssaRobinson2092 8 жыл бұрын
I just gotta say, It is so awesome when a teacher has such a cool, fun personality and you can tell that they enjoy what they do. You are great at what you do and its obvious that you have fun while you do it. You are really helping us out professor Leonard. Statistic and other math subjects are pretty hard for a lot of us, we appreciate that you are a teacher because without you a lot of us would have failed or be failing. Teacher of the year right here :)
@dariangreen7586
@dariangreen7586 8 жыл бұрын
Wow he's a lifesaver. I was struggling until I saw this. Great Teaching.
@jonathansabido5430
@jonathansabido5430 8 жыл бұрын
OMG.. Im glad I found this.. Much better than my teacher.
@ahnicc
@ahnicc Жыл бұрын
Every student deserve a professor like him.
@tanmaysharma3869
@tanmaysharma3869 3 жыл бұрын
I've had that confusion about the 'and' term since 7th grade. 9 years later, I'm 22 and today because of you, I finally understood it crystal clear. Thank you so much. You're an amazing teacher.
@mariashen8729
@mariashen8729 6 жыл бұрын
Thank you Mr. Leonard for posting the classes. It really helped my understanding of the concepts. The explanations and samples are easy to understand. And helped me to go through my class much easier.
@TrevorBasinger
@TrevorBasinger 7 жыл бұрын
You have a great teaching style Mr. Leo. Incredibly clear and approachable explanation!
@caseytizio-goldstein8918
@caseytizio-goldstein8918 3 жыл бұрын
Thank you Professor Leonard.You are single handedly helping me fulfill my life long term goal of becoming a Nurse. I am utilizing so many of your videos. You are so amazing at what you do! Thank you again!
@leoman9911
@leoman9911 7 жыл бұрын
I wish we could have such a talent in Pakistan as Professor Leonard is. You have a charismatic professor. i have never been impressed by a teacher like. My midterm exam is two days later,,, I wish i could reach your lectures a month earlier.. I pray for your looooong life, prosperity, good health and happiness for ever. Allah give you more strength to preach the noble cause. would love to meet you ever,,,,,.....
@wornpagesandendlesscoffey
@wornpagesandendlesscoffey 8 жыл бұрын
All the way from Florida.......THANK YOU!!! Finally someone who doesn't make stats seem like an alien language! This is my third attempt at the class, and the first time I understand it! You're awesome. Wish I lived were you taught. I'd never take another instructors math course again!
@Ivym123
@Ivym123 7 жыл бұрын
Thank you Professor Leonardo! I didn't have any idea how to do any of my homework. Now I completely understand.
@Zobaire90
@Zobaire90 7 жыл бұрын
I am in my masters of engineering (they have now combined bachelors with masters, have no choice) and i have avoided learning probability since first year (4 years now) because they were hopeless at effectively teaching the content. so i was quick to dismiss this topic.I would go to the exam without even bothering to learn it. now, i have to do a unit that is pure probability and statistics, and you SIR are a legend. LEGEND I SAY! you lay the foundations very well, something alot of professors cant do. explanation and examples are perfection!
@benstallone6784
@benstallone6784 2 жыл бұрын
I though I already knew all of this stuff but you taught me something that I subconsciously assumed but didn't actually know. Namely the the difference in meaning of "and"
@brandonaxworth2771
@brandonaxworth2771 6 жыл бұрын
This is a wonderful video. Thank you for making this available.
@cakefactoryy
@cakefactoryy 7 жыл бұрын
Amazing lecture, im taking probability and statistics for engineers this semester in college, and this really helped me ALOT!
@ayarezk8684
@ayarezk8684 5 жыл бұрын
I have always struggled with the "and" rule and with the binomial distribution. You have provided the best explanations ever. Thanks for your lectures.
@kepop98
@kepop98 2 жыл бұрын
You helped me with Algebra and now I’m coming back for Stats! I truly appreciate you Professor!!
@coffeeandalicia
@coffeeandalicia Жыл бұрын
Thank you for having this up. I feel like I'm taking your class and doing the HW for my professor lol Your explanations have helped so much! (from an non-traditional 30+ old student)
@jonathankalungi165
@jonathankalungi165 4 жыл бұрын
I wish I watched your videos earlier when I was in A level I'd have gotten an A but since God has he's own timing I thank God that I'm watching them now. They've helped a lot your the best
@radnj4610
@radnj4610 6 жыл бұрын
Thank you Professor for such a great and clear way of teaching.
@mostafa9093
@mostafa9093 7 жыл бұрын
you made things pretty simple , hope you cover a lot more topics in discrete maths
@timothymanyama2296
@timothymanyama2296 7 жыл бұрын
Thank you for your good lectures and keep up the good work. Please make your writing big so we all and sundry can see clearly.
@injypal
@injypal 5 жыл бұрын
You are a great teacher. I wish I got these videos when I was a student.
@tekathegreat
@tekathegreat 5 жыл бұрын
i dont know what would my math life would be with out you!!!!!!!!you are perfect!!!!!!!!!!!!!!!
@theaveragemegaguy
@theaveragemegaguy Жыл бұрын
In a quantum mechanics class and this helped clear up so much. Thank you!
@malimasuuka2220
@malimasuuka2220 4 жыл бұрын
Some people were really created to deliver....warm thanks from Namibia
@f1a2l3o4
@f1a2l3o4 7 жыл бұрын
you re awesome !!A big thank you from a Morrocan living in montreal . I wish I can send you a gift or something
@AP-ks1dj
@AP-ks1dj 6 жыл бұрын
You helped me get a 103% on my first exam so I’m hoping I can get an A on my next one too :) This new material is more difficult but you’re really good at explaining these concepts, thanks!!
@lemyul
@lemyul 5 жыл бұрын
I wish you have upper level math videos. This stat 1 video is helping me in probability and random variables right now.
@tatakim2517
@tatakim2517 6 жыл бұрын
I now have a good grasp about this topic coz of this video so thanks once again!
@logicstv
@logicstv 7 жыл бұрын
The best, I owe my degree to you sir
@kevinjackson976
@kevinjackson976 6 жыл бұрын
This guy deserves more subscribers!!
@ronzie
@ronzie 2 ай бұрын
You are a great teacher!
@LennoxLewis86
@LennoxLewis86 8 жыл бұрын
Thank you. Looking forward to the next one. I need to know how to calculate probabilities of drawing a specific card in multiple attempts (or a collection of different cards within x trials). It would improve my decision making when playing strategy games involving probability. I want to apply this by calculating development card probabilities for the game Settlers of Catan. For example; I would like to draw 3 knights and a victory point with 4 draws (in no specific order). What is the probability of that happening? There are 14 knights and 5 victory points in a 25 card development deck.
@razvanastrenie1455
@razvanastrenie1455 3 жыл бұрын
Excellent presentation !
@shreyasingh8498
@shreyasingh8498 5 жыл бұрын
Sir u are much better than any other teacher
@arunbm123
@arunbm123 8 жыл бұрын
This is best tutorials...
@cynthiabrink6616
@cynthiabrink6616 8 жыл бұрын
Holy muscles :0 ... Good lecture too, very helpful.
@marq6325
@marq6325 3 жыл бұрын
Incredible explanation sir!
@dzitsemichael2193
@dzitsemichael2193 7 жыл бұрын
infact i wanna be like this man so that if two of us exist we can change the world,thanks a lot prof i am indeed greatful
@zabrinnamariel
@zabrinnamariel 7 жыл бұрын
this is amazing thank you .......i understand now God bless you :)
@vickiekoske8090
@vickiekoske8090 3 жыл бұрын
you are simply the best..
@kaanaltug455
@kaanaltug455 4 жыл бұрын
39:53 Sir, I think you meant to say "dependent" there.
@duncanmomberume3723
@duncanmomberume3723 5 жыл бұрын
the best of the best .Thanks.....
@kellypomeroy4953
@kellypomeroy4953 2 жыл бұрын
this helped so much
@amaramurra3282
@amaramurra3282 6 жыл бұрын
YOU ARE PHENOMENAL. What I would do to have a professor like you. You are constantly reinforcing the concepts and just teaching in a way that is so easy for me to grasp. THANK YOU THANK YOU SO MUCH. Ive wasted a lot of time trying to intuitively grasp probability and this has made it so easy. only complaint is your muscles distracting me.
@ProfessorLeonard
@ProfessorLeonard 6 жыл бұрын
I'm very glad to be of help and that the videos have made these concepts more understandable to you :)
@amaramurra3282
@amaramurra3282 6 жыл бұрын
Professor Leonard you are truly so great at what you do! I’ve proceeded to watch basically all of your videos for statistics and it has truly helped me tremendously. You are an excellent professor who truly cares about his students success. Like I said I would do anything to find a professor like you. Thank you so much for all of your help and I look forward to using your videos when I take calculus.
@Neodrawsstuff
@Neodrawsstuff 2 жыл бұрын
I'm in my MPH taking Biostats online, wow what a freakin challenge. Your lectures help me understand more in depth in a fun way. I'm hoping you have lectures to take me all through Biostats. Thank you so much. If you have any advise to overcome the intimidation of Biostats, I'm all ears.
@user-pm6dq6el5m
@user-pm6dq6el5m Жыл бұрын
Thank you very much
@user-it4xx9uq2h
@user-it4xx9uq2h 7 ай бұрын
GREAT!
@leonexntando2943
@leonexntando2943 7 жыл бұрын
Professor Leonard explains better than my lecture
@wisdomchiviya5390
@wisdomchiviya5390 4 жыл бұрын
This is awesome
@Anno411
@Anno411 5 жыл бұрын
This is the best statistics lecture i have ever encountered. very explanatory. please can i transfer to your school and major in statistics?
@casmcctutube
@casmcctutube 4 жыл бұрын
i be behind my computer screen like "PROBABILITY OF B!!!!!"
@Parameswar_Ghosal
@Parameswar_Ghosal 8 жыл бұрын
Thank you very much sir ..........................
@dongiovannidemontecristo1835
@dongiovannidemontecristo1835 4 жыл бұрын
I also drive a black Audi 2005 S6 cheers from New York.
@20wolverines2013
@20wolverines2013 3 жыл бұрын
Curious idea about one of the concepts. You were speaking about rolling a Die giving independent outcomes in the case P(2|3). Is it really independent though? If you continue to roll the die 100 times for example and you have yet to roll a 2, the chances of rolling a 2 are becoming more and more likely due to the Law of Large Numbers. How does that work?
@TheComputerqueen
@TheComputerqueen 6 жыл бұрын
Thanks a lot
@Indian12354
@Indian12354 5 жыл бұрын
Hi Professor, I have gone through some of your statistic videos .They are really very nice and understandable for any lay man.I am actually stuck with Bayes theorem .I could find proper explanation for Bayes theorem anywhere.Could you pls post a video for same as it will be very helpful to me
@elgwengarimondsazon5581
@elgwengarimondsazon5581 8 жыл бұрын
please help,i am struggling to this question. a person applied to 3 companies. probability of obtaining offer A 0.4., B 0.3 , c 0.6. assume three are independent. what is the probability that the person will receive a job offer from company b only
@drsaimairam15
@drsaimairam15 7 жыл бұрын
excellent
@theinthanhlan3582
@theinthanhlan3582 2 жыл бұрын
Thx.
@ismaillestrose6755
@ismaillestrose6755 4 жыл бұрын
Good lecture, I am taking Stat now, I understand your lecture better that my professor. I wonder if you teach College Algebra for my daughter.
@06ek293
@06ek293 7 жыл бұрын
Is the formula for the prob. of selecting 3 Blue marbles w/o replacement P(Blue and Blue and Blue)= P(B).P(B|B).P(B|B|B) ?
@somcana
@somcana 6 жыл бұрын
is multiplication rule related to permutation? Thanks
@millicentwafawarova5470
@millicentwafawarova5470 2 жыл бұрын
10years gone..and we still here🥰📌
@DeepakKumar-pn2qs
@DeepakKumar-pn2qs 8 жыл бұрын
solid body sir very........... good lectures
@sakcee
@sakcee 5 ай бұрын
This prof is too good for a small city college, he needs to be teaching UT Austin or Berkeley ....but alas those universities is filled with profs teaching who have no interest in teaching and only want to do research on esoteric theories
@nishantbagree2041
@nishantbagree2041 8 жыл бұрын
please can you tell me best writer names of maths and stats books.
@pallavisaxena7496
@pallavisaxena7496 5 жыл бұрын
could you please add subtitles to these videos... thanks for these awesome lectures
@philosophinaturalisprincip9642
@philosophinaturalisprincip9642 8 жыл бұрын
I'm curious as to why, when regarding conditional probability for independent events, isn't P(B given that event A occurred) isn't equivalent to 1- P(A). It made sense for that to be valid, but in practice, it isn't a valid statement. For example, P(2 given that 3 occurred)= 1/6, but if there independent shouldn't it be 1- 1/6, but I guess that rule, logic, only applies to dependent events and not independent events. Independent events are I guess separate events while dependent events are conditioned upon what happens during event A, thus it'll be 1- P(A). I think I might've answered my own question.
@007alkazaar
@007alkazaar 7 жыл бұрын
When you think of dependence or independence, you have to think of whether the P(A) effects the P(B) occurring. If it does, the two events are dependent. If it doesn't the two events are independent. So if P(B|A) where A and B are independent, then P(B|A) = P(B). Because of independence, event A happening has no effect on the probability of event B happening.
@nottybanks7
@nottybanks7 6 жыл бұрын
How much do you bench?
@BrideOfYashua
@BrideOfYashua 10 жыл бұрын
Your the best!!! With your help, I might actually get an "A" in stats!!!
@dw5728
@dw5728 9 жыл бұрын
maria gotsis Professor Leonard, thank you so much! You have no idea how helpful these videos have been. I'm enrolled at another university, but our text book is the absolute worst and I've had trouble following along. You explain things very clearly and you make the subject matter relatable, which I find incredibly helpful. Thanks again!
@BrideOfYashua
@BrideOfYashua 9 жыл бұрын
Dahlia, I was fortunate enough to have the same text book as Professor Leonard, and with his help I received an "A" in my Stats class!! Thank you Prof Leonard!
@lornastockwood6830
@lornastockwood6830 9 жыл бұрын
Could you tell me what text book you were working from?
@BrideOfYashua
@BrideOfYashua 8 жыл бұрын
MyLab & Mastering | Pearson www.pearsonmylabandmastering.com/
@BrideOfYashua
@BrideOfYashua 8 жыл бұрын
I hope that helps!
@ayandey2246
@ayandey2246 4 жыл бұрын
Godlike
@tobeornottobehaidar4493
@tobeornottobehaidar4493 2 жыл бұрын
I love such amazing Professor ,you're really awesome,but when we say P(Gand R) , we must say that its P(1st green and the 2nd red or 1st red and the 2nd green)so that the order is much important when the colors are distinct ,and thus P(GandR)=p(G).p(R/G)+ p(R).p(G/R)
@tobeornottobehaidar4493
@tobeornottobehaidar4493 2 жыл бұрын
I mean that P(Gand R)= P(G ∩ R) =P(R∩G) ,where ∩ is commutative (linear algebra)
@kalyantangirala6308
@kalyantangirala6308 2 жыл бұрын
I am a middle schooler so I have a question. How long is a college period?
@guidofeliz8384
@guidofeliz8384 2 ай бұрын
Independent= with replacement. Dependent = without replacement.
@abhimanyudubey338
@abhimanyudubey338 6 жыл бұрын
that moment at 58:01, when his students were not able to multiply two fractions. That was very cute. And it's quite ironic that students sitting in a lecture on calculus are having trouble in multiplying two fractions.
@perseusgeorgiadis7821
@perseusgeorgiadis7821 6 ай бұрын
Drop that biceps routine
@lemyul
@lemyul 5 жыл бұрын
Man, I messed up when I took Probability and Random Variables without taking Statistics first.
@heilaal-mogren5828
@heilaal-mogren5828 6 жыл бұрын
20:21 Conditional Probabilty
@KhakiShow
@KhakiShow 9 ай бұрын
we're close to 2024 and i'm watching it :)
@gn5574
@gn5574 4 жыл бұрын
Audi a good car!Expensive parts and repair though.
@jackiekutty
@jackiekutty 4 жыл бұрын
There are 50 red and 50 black balls in a box, When you randomly pick two balls without replacement then what is the probability of second ball being black given that first ball is red? can anyone pls answer to this?
@hasanalam83
@hasanalam83 3 жыл бұрын
I think 49/98=1/2
@tripnavy04
@tripnavy04 5 жыл бұрын
You are best ....but I can't be in your class...
@jodi9361
@jodi9361 9 ай бұрын
can someone explain the difference between mutually exclusive and independent?
@vipcypr8368
@vipcypr8368 9 ай бұрын
Independent means that both events can occure, but occurence of once does not affect the occurance of the other. It's like with taking a random person from a crowd, and looking at probability of picking someone with a red shirt and at the same time being a woman. Both can occure, and one does not affect the other. Meanwhile mutualy exclusive would be if in the same scenario we would look for occurence of the choosen person to be blonde and brunnete at the same time. Occurence of one scenario means the other one is impossible.
@eroblanco113
@eroblanco113 7 жыл бұрын
if given the chance to be his student, i'll be punctual in class, and be attentive to the lessons with patience, but his body is so destructive. sounds gay! IKR! you're a total package professor
@dane676
@dane676 4 жыл бұрын
Note for self: 42:39
@laforever401
@laforever401 5 жыл бұрын
Does anyone else keep getting distracted by his muscles? No? Just me? Okay.
@ahmedsurajuddin967
@ahmedsurajuddin967 7 жыл бұрын
isnt it suppose to be P(QIQ)=1 ???
@06ek293
@06ek293 7 жыл бұрын
It cannot be 1 since there are 4 Queens in a 52 card deck and it is possible that you select some other card other than Queen.
@mathprof7776
@mathprof7776 5 жыл бұрын
U sound like u dont know how to play the Game Ahmad.
@trentholder7322
@trentholder7322 5 жыл бұрын
Me and my friend failed our first test after watching this. Thanks
@kayserdominguez7261
@kayserdominguez7261 5 жыл бұрын
how come? how is this his fault?
@roadtoad3484
@roadtoad3484 4 жыл бұрын
57:42 higher math!!
@wesleydunow222
@wesleydunow222 5 жыл бұрын
I'd like to pay you for helping me out in Math class, this is too good not to pay for! What's your square cash, so I can send you some money?
@ProfessorLeonard
@ProfessorLeonard 5 жыл бұрын
I really appreciate that!! I have a Patreon account at patreon.com if you'd like to donate. Thanks again :)
@SJ23982398
@SJ23982398 8 жыл бұрын
one person didn't wave his hand and didn't feel good about this
@pamicianicolas2512
@pamicianicolas2512 8 жыл бұрын
I have to samebook pearsonmymathlab.
@robertsullivan9833
@robertsullivan9833 2 жыл бұрын
occurrence
@fostersepenu1916
@fostersepenu1916 8 ай бұрын
hello can you please recommend the book he used for the lessons for me.
@beverlyfrancis8433
@beverlyfrancis8433 4 жыл бұрын
I know plenty about you. You are handsome.
@PoseidonMA
@PoseidonMA 8 жыл бұрын
He repeats a patently false statement over and over within the first several minutes. The word "and" has exactly the same meaning in both formulas, simply that "both" events are true. For instance, if I roll two dice and ask "What is the probability of rolling a 5 on the first die or a 3 on the second die?", then I would use the Addition Rule and calculate P(5 on 1st) + P(3 on 2nd) - P(5 on 1st and 3 on 2nd) in which case the word "and" clearly refers to two different (in this case successive) trials. I wouldn't trust the information given in this lecture.
@prateek007sharma
@prateek007sharma 2 жыл бұрын
P(5 on 1st dice or 3 on 2nd dice) - This means that my trial will be successful even if I get desired outcome on one of the trials, that is either of the dice or both (both means 5 on 1st AND 3 on 2nd)= 1/6 +1/6=1/3 P(5 on 1st dice AND THEN 3 on 2nd dice) - Trial will be successful only if 1st trial And THEN 2nd trial both are successful= 1/6*1/6=1/36
Probability - addition and multiplication rules
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