The pace is always hard for me because the KZitem audience is so diverse. My target audience are those students that are struggling with statistics and I have learned that for a struggling student the pace can never be too slow.
@statisticsfun
11 жыл бұрын
Thank you for the feedback! Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.
@shockvoz1234
12 жыл бұрын
Please continue to post these very clear and concise explanations. These videos are by far some of the most clearest explanations of statistics. Probability of finding a video as this: one in a million.
@statisticsfun
11 жыл бұрын
Wonderful to hear the videos are helpful for you and I do appreciate the feedback. Make sure you like MyBookSucks on FaceBook (see video description for link). This will help other students find the educational videos.
@alishadaswani6796
9 жыл бұрын
You sound like the guy from OwnagePranks... nice video tho :)
@statisticsfun
9 жыл бұрын
Alisha Daswani I have heard that from a couple of people now. Interesting. Hopefully you will like, share, subscribe, If you get a chance could you please like our FB page. www.FaceBook.Com/PartyMoreStudyLess It will help others find the videos.
@jay4eva2010
8 жыл бұрын
Who knows ? Ownage maths prank ?
@lifehacks5813
7 жыл бұрын
Haha
@statisticsfun
11 жыл бұрын
Thank you so much for your positive feedback! Much appreciated. Make sure you like MyBookSucks on Facebook (see link in video description). This will help other students find the educational video. Good luck in your classes, too!
@statisticsfun
11 жыл бұрын
The pace and length for me is always a struggle because the KZitem audience is so diverse. Thanks for you input.
@saokoc
6 ай бұрын
11 years old and is still the clearest video i've come across so far. The visuals helped so much. I appreciate you!!
@agentstona
2 жыл бұрын
You started off well , but than you confused the hell out of us noobs ... i would recommend that you stop skipping simplifying fractions but rather put them down in raw form if its 2/6 leave it at 2/6 because you are explaining to noobs who are lost and trying to understand where to get each value from , the last thing you want to do is divert there focus from seeing how things are being done to trying to figure out what was simplified ..... You could simplify things in the END but not while showing the PROCESS ...If you start talking about 2/6 is simplified to 1/3 mid way while people are still trying to come to terms with where and how you got 2/6 from your are DISTRACTING THEM and that's what makes them confused .... how ever if you have COMPLETED all your steps and process of explaining in the END you could than revisit and go back to where you wrote 2/6 and say hey guys you can also simplify 2/6 to 1/3 which is 0.33333 because its good practice ......... Nothing personal but this is THE FUNDAMENTAL problem with EVERYONE teaching MATHS they tend to skip steps and assume that the audience will fill in the GAPS or either mid way pull of Moves such as simplification when its CLEARLY not needed and showing things in the RAW form for explanation purposes is JUST as GOOD enough .
@statisticsfun
11 жыл бұрын
I believe your conclusion for joint probability is incorrect. It should be 2/6 not 3/6. You could roll a one or a three, these are odd and less than four. These are the 2 possibilities. Not sure where you are getting the 3 or for the 3/6.
@statisticsfun
11 жыл бұрын
You can only square the probability of two events occurring simultaneously if they are independent. These probabilities are not independent. This is called the "multiplication rule for independent events."
@statisticsfun
12 жыл бұрын
Many Thanks! Make sure you help me spread the word about the free videos. One thing that helps is if you like MyBookSucks on Facebook (see link in the video description).
@statisticsfun
11 жыл бұрын
Thank you for you feedback. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.
@statisticsfun
11 жыл бұрын
That is great! Make sure you like MyBookSucks on FaceBook (see link in video description). This will help me spread the word about the educational videos.
@statisticsfun
11 жыл бұрын
You are very welcome. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.
@statisticsfun
11 жыл бұрын
You are welcome! Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.
@statisticsfun
12 жыл бұрын
Do make sure you "like" MyBookSucks Fan page on Facebook. I have some fun items (like my freshman student ID) and other college humor.
@sea20era
8 жыл бұрын
Super helpful and working step by step is super helpful. Thank you so much for this video!
@statisticsfun
12 жыл бұрын
Appreciate the great feedback. Make sure you tell your friends and classmates about MyBookSucks and like us on facebook to (see the link in the description of the video). Thanks again!
@ryanpohle3725
11 жыл бұрын
i would have liked if you showed mathematically how to find (PandB) instead of illustrating it through a representation. How am i supposed to use a venn diagram when i have huge numbers covering probabilities like peoples income and their education level and the correlation? Is it fair to say (PandB)=P(a)*P(B)... No. so how the heck do i find P(AandB) when i dont have an easy little representation to find it.
@statisticsfun
11 жыл бұрын
I think you are referring to when I change the problem starting at about 5:34 in the video. In the second half of the video, I change the problem from P(B) being an odd number to P(B) being equal to 1. Make sense? If not let me know and try to expand on your question a bit.
@MichielvanderBlonk
9 жыл бұрын
Your animations are nice, your pace really good..... However.... there are some really important concepts you fail to explain, which leaves gaps in the reasoning. 1) How do you do this without the Venn-diagrams? Answer: you can't. You have to know the intersection, or the whole exercise is doomed. When rolling dice it's easy to see, with thousands of items it's not so easy anymore. It's misleading to talk about P(B) because in the whole reasoning and calculations P(B) is not even used, it's irrelevant. P(A n B) is relevant, but it can't be calculated by a known P(A) and P(B). In this example the fact that P(A|B)=P(B|A) might also mislead students to think that this would always be the case, which it certainly isn't. 2) Why do you divide the outcome of the intersection by the 'given' propability? Answer: a given probability is like a 'total set'. You know for sure it's 100% true already, there is no doubt, it's given. That's why it says 'knowing that', and not 'hoping that'. The 'total set' is always the denominator of the equation for probabilities: something happening out of everything that can happen. In fact if you look at the Venn diagram of P(A) at 1:18 it is immediately clear that the chance is 2/3 without any calculations. The colored part has 2 items, the entire circle has 3 items. If we translate to the 'larger set' we can see the equation (2/6)/(3/6) which we can simplify by multiplying numerator and denominator both by 6. But the larger set is irrelevant, since we take samples A and B from the same set (6 sided die). The time you took in your video to explain the calculation of P(B) should have been used to explain why P(B) is irrelevant, and why P(A) is the total set for the equation!
@statisticsfun
9 жыл бұрын
Michiel van der Blonk My goal with all my videos is to help student understands the basic concepts, not to be a comprehensive end all 3 hour long video. Just trying to introduce the basics.
@jewcreww
9 жыл бұрын
+Michiel van der Blonk Thank you for point 2) this was exactly what I was sitting here trying to figure out!
@jct5014
5 жыл бұрын
Michiel van der Blonk r
@SamTheSubSaharan
9 жыл бұрын
thanks wanted to know the conditional probability of me getting caught cheating on a test
@statisticsfun
9 жыл бұрын
Samuel Asfaw Depends on your instructor and how sneaky you are.
@statisticsfun
11 жыл бұрын
Okay.. not sure I understand the meaning but good luck!
@karaganiamwamlole6412
8 жыл бұрын
I just became the 1000th person to like this video because you, sir, deserve it. Thanks!
@breakdancerQ
Жыл бұрын
This was an absolutely incredible video. Far and very far better than a stats course I am doing.
@LuisKing150
9 жыл бұрын
THANKS! Im seriously studying this before my exam in 2 hours!! LOL
@statisticsfun
9 жыл бұрын
Luis Mendez So.. you were "partying more studying less" If you get a chance could you please like our FB page. www.FaceBook.Com/PartyMoreStudyLess It will help others find the videos. Good luck on your exam, you can do it!
@shuotan
9 жыл бұрын
statisticsfun this video is very useful! thank you very much.
@alishadaswani6796
9 жыл бұрын
Luis Mendez for me 15 minutes...
@rayanamir6565
5 жыл бұрын
me
@statisticsfun
11 жыл бұрын
The intention of the video is to introduce the idea of conditional probability. It does not matter if you are using large samples or populations the basic principles are the same. What proportion of the people have a college education and an income over 100,000 as an example. I imagine you are trying to solve some sort of homework or research problem?
@statisticsfun
11 жыл бұрын
That is great to hear. I was going to name my company/website/FB page -- MyProfessorSucks but went with MyBookSucks instead :). Make sure you like MyBookSucks on FaceBook (see link in video description). This will help other students with horrible professors find the videos. Thanks!
@statisticsfun
11 жыл бұрын
Good question. If you look at the video starting at about 4:30 you will see that I use P(A) and P(A) and the intersection is P(A∩ B) not P(B). Is this what you mean? If not let me know the time in the video that you are talking about.
@statisticsfun
11 жыл бұрын
Well, thank you! Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.
@statisticsfun
11 жыл бұрын
yeap!
@statisticsfun
11 жыл бұрын
You are welcome! Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.
@statisticsfun
11 жыл бұрын
Thank you and good luck in your classes. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.
@statisticsfun
11 жыл бұрын
That is an interesting question. I think, the probability would just be zero. The conditional probability calculation is not possible.
@statisticsfun
11 жыл бұрын
Thank you so much. I try to use 21st Century Tools perhaps that is the difference. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help me spread the word about the educational videos.
@statisticsfun
11 жыл бұрын
You are very welcome and I do appreciate the feedback. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.
@statisticsfun
11 жыл бұрын
Thanks and it is my plan to build examples to help people do better on the GMAT / SAT / ACT, etc.. Good luck on your GMAT too.
@statisticsfun
12 жыл бұрын
You are very welcome.
@statisticsfun
11 жыл бұрын
Great to hear! Make sure you like MyBookSucks on FaceBook (see link in video description). This will help me spread the word about the educational videos.
@statisticsfun
11 жыл бұрын
Well thank you very much and I appreciate the feedback. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.
@statisticsfun
11 жыл бұрын
You are very welcome. I appreciate questions because it helps me understand what students are struggling with and then I can create right videos.
@statisticsfun
11 жыл бұрын
I don't have anything on Bayes yet, but I plan on creating something in the next few weeks.
@statisticsfun
11 жыл бұрын
Let me know when in the video you are questioning. This will help me answer your question.
@statisticsfun
12 жыл бұрын
Yes, you can use a decision tree to help understand conditional probabilities.
@statisticsfun
12 жыл бұрын
Great suggestion and it is my plan to have a series of videos on Bayes Theorem. I hope to have one done within the next week or so.
@tcpham2674
9 жыл бұрын
good teacher
@statisticsfun
9 жыл бұрын
+Tc Pham Thank you for your kind words. Hopefully you will get a chance to share and like the videos. This will help others find them.
@statisticsfun
11 жыл бұрын
While I can't be your teacher, I can post videos for you. And I do call myself the "professor of the universe" :)
@statisticsfun
11 жыл бұрын
Because there are six dices and the odds are 1 out of 6.
@abrarabdullaha3905
11 жыл бұрын
that's totally amazing
@kellyjameson749
11 жыл бұрын
Thank you! I'm taking stats for the first time this year as a senior in high school and most of it comes pretty easy but this is something I was never able to wrap my mind around! This was very helpful for me and I feel so relieved!
@cherieminn2673
6 жыл бұрын
my best teacher ever💯👍🏻 my QUANS teacher sucks!
@statisticsfun
11 жыл бұрын
Great to hear... maybe you could send a link to your teacher :)
@statisticsfun
11 жыл бұрын
Great to hear and good luck on your test too! You can do it.
@cameraeye21
8 жыл бұрын
the video is great but the pace of the speaking is so slow. If people don't understand they can always pause. The pace should speed up just a little
@samanthapikus3178
7 жыл бұрын
Please Help... A restaurant has collected data on its customer?s orders and so has estimated empirical probabilities of what happens after the main course. It was found that 60% had dessert only, 30% had coffee only, and 10% had both dessert AND coffee. 1. Find the probability of those who had coffee. 2. Find the probability of those who did NOT have dessert. 3. Find the conditional probability of ordering dessert GIVEN that the customer ordered coffee. 4. Find the conditional probability of ordering dessert GIVEN that the customer did not order coffee. Dessert (B) No Dessert (B') Total Coffee (A) 0.10 0.20 0.30 No Coffee (A') 0.50 0.20 0.70 Total 0.60 0.40 1.00 P(A) = Those who had coffee = 30 P(B')= Those who had no dessert = 40% P(B|A) = Probability of ordering Dessert given that one ordered Coffee = P(a and b)/p(a) = 0.10/0.30=0.33 = 33% probability that you would order dessert given that you ordered coffee P(B|A') = Find the conditional probability of ordering dessert GIVEN that the customer did not order coffee. = P(A' and B)/P(A') = 0.50/0.70=0.7142=71% of ordering dessert given that the customer did not order coffee. My teacher says I got this wrong, but I don't know what I am doing wrong. Please can you help me.
@statisticsfun
11 жыл бұрын
You are welcome and good luck on your CFA!
@carolinespec
8 жыл бұрын
I don't see why the second example is not 1/2. How can it be 1/6 for the P(B and A)? You have 1 option out of 4 total that can meet both being odd and being one--I don't see why you say it's 1/6. I followed the same pattern you showed in the first example. There were 6 options because there were 3 options for odd numbers and 3 options for numbers less than four and only 2 out of those 6 met both qualifications. But in the second example, it appears you use some different approach. I got 1/2 for the final amount.
@sunitamathew4877
8 жыл бұрын
How do you know which is A and which is B? Why couldn't I put "knowing that the value is an odd number" as my B and then having the "rolling a dice and it's value is less than 4"? I'm concerned that when I'm given another example, I wouldn't know how to put the A and B accordingly in it's place. Thanks in advance for your help.
@statisticsfun
12 жыл бұрын
Many thanks for your feedback, much appreciated.
@heyooyeh9059
7 жыл бұрын
How do you claculate P(AnB) tho?? Like i get it with a venn diagram but what if i have to calculate it without the diagram? Is it like P(A) x P(B) or something??
@SirFD_
7 жыл бұрын
What is the difference between Non-Mutually Exclusive events and Conditional Probability events?
@uchetony-okeke1788
10 жыл бұрын
Anyone knows how to calculate conditional beta using GARCH in Gretl or SPSS or OxMetrics, please?
@SequinBrain
2 жыл бұрын
Not picking on you at all, since I see these dice problems in my text (Horgan), but how is it possible to know that a die is going to be odd prior to rolling it? I need this power!
@wiskifrac
4 жыл бұрын
It's like asking 'what's the probability of getting a dice outcome lower than 3 if only odd dice numbers can land?'
@laurendutton4881
10 жыл бұрын
Thank you so much for making conditional probability much clearer. I still have one question though. Could you show the same example, but with the P(A) and the P(B) being for much larger pools of data, where it would be impossible to draw the overlapping segment. I'm still having trouble visualizing that. Thank you
@notoriouswhitemoth
9 жыл бұрын
If I'm understanding your question correctly, it should be the exact same calculations, the only difference is that you wouldn't be able to illustrate your whole sample space in a Venn diagram. For example if you want to figure out how many face cards out of a hundred poker decks are of a particular suit, A would be the total number of face cards (1,600), B would be the number of cards of that suit (5,200). You're not going to be able to visualize that, but it's the same equation: 400 (number of face cards in each suit) /1600 (total number of face cards) =1/4
@notoriouswhitemoth
9 жыл бұрын
notoriouswhitemoth correction, 1,300 cards of any given suit
@mz_sophier4253
7 жыл бұрын
how do u work a problem that doesnt give the sample space eg. A/B = 1/5 , B/A = 1/3 what is a& B ? what is A?
@puresoul5560
6 жыл бұрын
thats why i use youtube because of channels like " Satisfaction " :d
@mitchvitale7370
7 жыл бұрын
I know you show it using venn diagrams, how come your numerator isn't (0.5)(0.5)?
@Josh-jo1zn
6 жыл бұрын
what do you do if the denominator has 2 different out comes after simplifying and you're trying to find an over all probability of something happening
@cabellmercer
2 жыл бұрын
While this is quite a helpful video, I find it disappointing that an educational video of such continuously uses the incorrect form of its.
@FirezAper46
6 жыл бұрын
how is P(A n B)= 2/6 if P(A) is 3/6 and P(B) is 3/6 then won't P(A n B)= P(A)xP(B)=3/6 x 3/6=1/4?
@maheennadeem7760
5 жыл бұрын
You are the best. Man, love your videos, keep it up. You deserve a like and a subscriber. Thanks.
@jerberus5563
4 жыл бұрын
Question for you. What's P(A|A)? (the probability of A given A)?
@coolcatj7
11 жыл бұрын
If both events have a 3/6 chance of occurring you can square the events to get 9/36 which is the joint probability right? Now, b/c this is a conditional you divide the joint prob by the conditional event which is 3/6. So, 9/36-the joint prob-divided by the conditional (3/6) is 54/108 which in decimal form is .5 which I got for the answer using the formula. Without the formula 2/3 makes sense for the answer. Hopefully that wasn't too confusing.
@coolcatj7
11 жыл бұрын
I'm most likely wrong. But will try again. The Blue circle:prob of rolling less than a four, not less than or equal to is {1,2,3} or a 3/6 probability, for rolling a value < 4. The green circle: knowing the roll is odd is {1.3.5}, therefore its probability is 3/6. So events A & B should have a 3/6 probability, respectively, right? Now, to find the joint prob you multiply the probability of the two events ( the green and blue circles) which both events have a 3/6 chance, right?
@coolcatj7
11 жыл бұрын
I probably misunderstood you. I get that only {1,3} are odd and less than four. But how did you get 2/3 for the answer using the formula? If P(B)=rolling a value < 4, which its probability is 3/6 or 1/2. P( A)= knowing the roll is odd, which its probability is 3/6 or 1/2. Formula P(B given A)=P(A*B)/P(A). 1st multiply the two events for joint prob, (3/6)^2. I got 9/36 or 1/4. Then divide that by the new sample space which is A or 3/6 for .5 or 1/2 as the answer.
@reallyidrathernot.134
3 жыл бұрын
Really good aproach, but lost me as you didn't say how to calculate the intersection of probabilies.
@TheMacksDaddy
11 жыл бұрын
Hi love your videos, but I need help. Do you have a video for a problem like: A pizza place - 70% of pizzas sold have sausage, 50% have extra cheese, 25% are neither. What is the probability that a randomly selected pizza has sausage and extra cheese? The 25% neither factor is screwing me all up. Thanks!
@statisticsfun
11 жыл бұрын
Good Luck!
@hirooooooo6848
4 жыл бұрын
2020 anyone? LOL
@heyitsuhmm
11 жыл бұрын
Hello sir!I really find your videos very easy to understand (coming from a stat-challenged person :) ) But, I think I missed something on this one, why is B in P(B) becomes the intersection of A and B?Why not A as the intersection of A and B?I'm confused.Sorry, and thank you!:)
@atanugg9372
7 жыл бұрын
one of best intuitive animated video make probability learning more fun..thak you sir.
@vinna01
11 жыл бұрын
Assume a variable X with three possible values: a, b, and c. If p(a) = 0,4, and p(b) = 0,25, what is the entropy of of X, i.e., what is H(X)? can you show me the calculation step by step?
@vinna01
11 жыл бұрын
n general, if a variable X has 6 possible values, what is the maximum entropy? Your answer should be accurate up to two decimals (0.01). Can you show me the calculation step by step
@007Anukul
6 жыл бұрын
amazing!
@agila.p9807
Жыл бұрын
How is A intersection B 1/3? can you please explain the logic?
@abbeyreddig7223
10 жыл бұрын
Thank you very much! so helpful!!!
@chamath13579
11 жыл бұрын
thankyouuu, i know understand Conditional probability,
@wildndetroit
11 жыл бұрын
exactly you should have said die instead of dice. whenever you use more than one die it's called dice. other than that excellent video
@MorolakeOBolarinwa
10 ай бұрын
Thank you for simplifying probability for me 😊
@Hebahamdy48
6 жыл бұрын
U r genius man.. as always thx alot.. Statistis is really fun because of u
@melissakwit2763
2 ай бұрын
This was very helpful, thank you!
@nima90
11 жыл бұрын
Re-Brushing this for GMAT, very well done. Should give some thought on using actual example from standardized tests.
@leilanydelgadillo2361
6 жыл бұрын
If P(A l B)=P(A), then is it always true that P(B l A)=P(B)?
@BEbetter0_o
11 ай бұрын
if you speed the video 2 times looks like he is talking normally
@MeOuda
9 жыл бұрын
How could additional condition raise the probability of the original event? I think it may be much logical and clear in other example but this one is misleading. But of course this video was very helpful. Thanks for that.
@bonbonpony
8 жыл бұрын
+Mohamed Ouda It does that by reducing the size of the sample space. Without the condition, you need to take out of 6 equally likely possibilities {1,2,3,4,5,6}. But the condition throws some of them off the window (those which are even, {2,4,6}, because they don't fulfil the condition), so your sample space reduces to just the odds: {1,3,5}, which is precisely the P(A).
@ashervijayyampolsky7759
9 жыл бұрын
Hi! Your graphics are fantastic, your examples are fantastic, and your pace is extraordinary! I found the video quite confusing, though, because the phrasing/wording didn't correspond to what you were trying to say. If you fixed it, it would just make your work AMAZING. For example, instead of saying "What is the probability of rolling a dice and its value is less than 4?", it would be clearer to ask "What is the probability of rolling a die (or dice) and getting a value less than 4?" That way, you're asking about which number is shown on the die after it's rolled, not about some kind of value for the die itself, as though the cube has some kind of intrinsic value with an assumed unit ;) Also, instead of saying "knowing that the value is an odd number is event A", it would be clearer to say something like "Event A is rolling the die and getting an odd number", and separately explaining that the vertical bar for "given" means that we know that A is true. There are other things, like saying "and" before "knowing" instead of just going straight to "knowing"... They might seem like small improvements, but I really think they would make your presentation shine!
@statisticsfun
9 жыл бұрын
Asher Vijay Yampolsky Asher thanks for the feedback. I am always looking for ways to improve my videos. It is a struggle for because I narrate on the fly instead of working from a script.
@ashervijayyampolsky7759
9 жыл бұрын
Ah, I understand!
@bonbonpony
8 жыл бұрын
+statisticsfun How about recording your "on the fly" approach first, and then making a script out of the best parts of it, correcting any mistakes and improving it in between, and then recording it again with a script at hand? :)
@2CommaClub
7 жыл бұрын
Why would a die have an intrinsic value with an assumed unit? lol.
@janakamw
9 жыл бұрын
Can you explain the answer for this any one. Two separate product divisions in a large corporation are Margo and Beancorp. The probability that Margo will earn a profit of at least 7 percent is estimated to be 0.30, the probability that Beancorp will earn a profit of at least 7 percent is 0.20 and the probability that both divisions will earn a profit of at least 7 percent is 0.06. a. Determine the probability that Beancorp will have at least a 7 percent profit margin given that the Margo division achieved this profit criterion.
@thelastcipher9135
8 жыл бұрын
+janaka dias (janamw) the answer is 0.06... the answer can be seen inside the question.
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