Next Video: kzread.info/dash/bejne/qWirrbqPp9etkcY.html Final Exams and Video Playlists: www.video-tutor.net/

You are literally my saviour. Time and time again. For different classes. Different Levels. Thank you.

For those also confused about if it should be $400, I think he must have intended to say "If she wins, she gets a $500 prize and they cancel her $100 cost of playing

@arthurrealisanjr.4144

3 жыл бұрын

I was about to say this

@arthurrealisanjr.4144

3 жыл бұрын

It's really rare for this guy to make mistake, I guess even pros make mistakes like us

@nae7988

Жыл бұрын

Everyone makes mistakes, even machines.

@mysteriouslywierd279

Жыл бұрын

So it should be $400

@throxx5440

Жыл бұрын

It is not , because it weighs not because only on Value not also by Probability, Value is Relative to Probability.

I'm not skipping your ads and I subscribed too ,to show my gratitude to you! Thank God you exist!

Beautiful explanation. No book explains the concept of Expected value the way you did in a simple and elegant way. Thanks

I'm an italian student struggling with a math exam, I'm so thankful, for real God bless you and your work💪

this is a very clear explanation of how to compute expected value. so the only key is that it's either win or loss. in this video there's only three key being used. outcomes, value and probability... I never understood the video that my math prof. provided us for the lesson and let alone the textbook that I had so I have to watch video and I'm glad I found this one.. it was very helpful and easy to understand... I got A plus on my quiz. thanks to this video.

Thank you for being the reason I've passed so many classes that were challenging for me.

Is there something this man doesnt know. Organic chem tutor is certainly the fking polymath of our generation

It's just amazing how versatile you are

Would it make sense to use $400 for winnings considering it costs $100 to play? If she wins she only takes home $400. I really enjoy your videos btw!

@hadjerrahmoune4829

4 жыл бұрын

I was going to ask the same thing !

@JohnnyJr396

3 жыл бұрын

Maybe you have it now, just posting for others.Going by other explanations from other sites.... the 500 is the net gain . She would win 500 in addition to her 100 bet.

@loll2355

3 жыл бұрын

I thought the same thing

@Duel53

3 жыл бұрын

Yeah but the probability of you losing is very likely. So you’re more likely to lose money than gain.

@igothisoncamera7205

3 жыл бұрын

@@JohnnyJr396 she bought using the 100, she didnt bet with it?

exceptional content The Organic Chemistry Tutor. I crushed that thumbs up on your video. Continue to keep up the amazing work.

I was struggling to understand this concept even after so many tries here and there but this video cleared by concepts. Thanks you very much @The Organic Chemistry Tutor

@thetruthonly7329

2 жыл бұрын

you can't ping ppl this isn't discord

@nokadota5473

Жыл бұрын

@@thetruthonly7329 i think u can lol

you are my most comprehensive tutor thank you so much I really appreciate you the way you make clear ❤🙏

MR. Organic Chemistry Tutor, this is an excellent explanation of How to Calculate Expected Value in Mathematics.

Brilliant explanation. Straight to the point

You are such an awesome teacher. Thanks!

Very nice ... clear explanation and the pacing was great. Thanks!

And yet again I can rely on my GOAT. This GOAT has taught me more than my entire time at college.

Thank you for the explanation !

Fr this dude is such a good human.

Thank you So much this was very helpful!

So helpful for me !! Thank you

His lessons have never failed me

And now I'm sitting here wondering why I thought it was so complicated. Thanks for making it really understandable man!

@indranim7268

2 жыл бұрын

Yup😀

I just taught this in my Geometry Class where we used circle (like a spinner) to find the expected value. 👍

@josephlau13d77

3 жыл бұрын

no. Real geometry is algebraic geometry and differential geometry, with spinors, tensors etc

THANK YOU SO SO SO SO MUCH!!!

best youtube video ever supperrr recommended

Hey, this is just a warning but the problem has an odd wording and would (in my opinion) have to be + 400 and - 100 for the two outcomes. Because if you stake 100 $ and win 500 then the net benefit is 400 $ and not 500. This also makes sense because playing the game and losing, the net loss is 100, so the net gain should also account for that. It is just the wording of the problem, wonderful video tho

@moaazabukhalaf5750

8 ай бұрын

You're completely right. That is exactly what I noticed.

Really helpful ❤️

Thanks!

you are great! thanks.

uhm do you have a tutorial video for solving calculated value in a quartile?

Life is boring without you.

As an avid comic-sans user myself, it makes me happy to see it used here.

Thank you very much !

Could you please tell the name of the Software you use for writing on the Screen like this ?

i love u so much ty !!!

you saved my life

Thank you so much

Can you explain relativity math ( tensors rank 2 or above ) ( geodesics ....)

I beleive the smaller the games, the money is harder to calculate (it might be way more off than 200), but if you have 1000 games then it would be around 20*1000 like you said.

did he talk about PMF for discrete random variables in any of his videos?

I have nobody but you to thank for my degree.

god this is this good

Amazing

The number of Panic attacks you have saved me from a week before my Exam is unreal!

beautiful

Not the method shown in class but the method I will be using non the less

Can you explain, why is it the expected value of winning? Why not the expected value of loosing. Since both shall be calculated in similar fashion.

So basically these are statistical weights?

How do you calculate the probabilities of each value?

Legend

my brain has a hard time understanding math. why are we multiplying the value by the probability? (instead of ADDING the value to the probability for example). Like what does multiplying them do? I need this problem broken down into more detail because I have difficulty with basic mathematics. Now I understand how to solve this problem but I don't fully understand WHY we solve it this way. I just understand how to plug in the formula.

@eliciagarcia3601

2 жыл бұрын

Like what does multiplying a decimal do? I need that part explained in detail. I dont get whats happening when we multiply five hundred dollar value by its twenty percent probability.

@yosbo9060

2 жыл бұрын

@@eliciagarcia3601 It's essentially just a weighted average. You multiply the 500 by how often it occurs (0.80) to give it a "weight" of 80%. -100 occurs only 20% of the time, so you multiply it by 0.20. Once you add the two values together, you get an average. 80% of your new average comes from the $500, and just 20% of it comes from the -100. You could contrast this with the way you're probably used to taking averages. 500 +(-100) / 2. This just means that 50% of the time it is 500, and the other half of the time it's -100. Dividing by 2 is the same as multiplying by 0.50, so the whole expression can be rewritten as 500(0.50) + (-100)(0.50). Note how this is the same as the presented problem, just with even weight distribution.

is the first question means that if she win the game she no need to pay the 100 cost? cuz if she have to play the game suppose she have to pay 100, after all she will only receives 400 although she win

He sounds exactly like my stats teacher

I like your voice in the video

For the value of the first game, since it costs $100 to play, wouldn't the value be $400?

How would you do this problem: ur part of a raffle: 1. 20 entries for 20 dollars 2. 40 entries for 35 dollars 3. 60 entries for 100 dollars -- what is the expected value per entry? Next: what is distribution is 25% of option 1 and 25% of option 2 and 50% of option 3-- what is the expected value of option 2?

Dude, I love getting stat's lessons from Marky-mark.

As good as khanacademy

mark walburg teaching me math

@Josama0214

7 ай бұрын

This isn't math?

so whenever you do the business, the profits are always be your side

So if this was done correctly ($400 win, 500-100), then we expect to win... $0. Great game.

Clutch my gosh

I don't know why I'm watching this video, my school year ended on May 22.

@GhostSamaritan

3 жыл бұрын

Learning doesn't stop at graduation.

Don't we have to calculate 100$ of initial cost to play separate from chances to lose? Doesn't she earn 500$-100$=400$ in case of victory and always lose her initial 100$ irregarding the outcome of the game?

If she plays 20 games and her expected value for wining on each game she plays is $20, then she wins $400, but she doesn’t play for free--she pays a $100 every time she plays. So in that case, she appears to have won $400 but also lost $2000! Did she really win? Unless of course, the cost of playing is factored into the calculation of the expected value. In such case, she could indeed win $400 in theory. This problem needs further clarification. As for the laptop scenario, this must be a horrible business. The company margin of profit is too low. If the average salary of a worker is $2,500 a month, it takes the company manufacturing more than a 100 laptops to pay only one of its employees! Anyway, that was a side note that has nothing to do with the subject. The expected value though should be described as to represent not just the winning scenario, but also the losing scenario. Both scenarios are called the expected value. Great job!

in the first question you need to subtract the cost to play from the win: $500-$100 = $400

Is $100 the cost of playing the game?

That is not an expectation. You are representing the conditional expectation function, which is really different. Conditional expectation function is a function, expectation is a value. Really different.

Guys follow concept only not to correct

This is wrong no? For the first example, if she loses she is down 100 bucks, but if she wins she is up 500 bucks *less* the 100 bucks she spent to play. So the calculation would be 400(0.2)-100(0.8) which is zero. She's not winning or losing anything from the game.

@billylamara

8 ай бұрын

Thanks for the good explanation m8, I was in doubt too

Hey, you made a mistake on the video and my OCD is killing me. If She wins on average 20% or simplified 1 game every 5 times. This means she spends 100$ a game or 500$ for 5 games just to win once. Therefore, she spends 500$ to win 500$ back that 5th game.

hi

second comment

Accept my knee

Wrobg explanation

man who are you .......

incorrect wording of both of the problems.

This video is for a child of 7 year old in 2023. Please upgrade.

Whoever came up with this stupid formula is a genius because people actually believe in this crap

you talk to much shhhhhhhhhhhhhhhhh shesh