@@IrisFranz Please I have a request. Can you do a video on the chapter pure market securities? which includes how to optimally allocate their wealth in terms of consumption and investment using lagrange equation.
I just can't see why your videos do not have many views like millions even after so many years since you published them. But believe you me, you are the greatest. As I type this, I have 1 hr 30 mins into exams, but I regret seeing your videos at am eleventh hour. I believe the little I have learned will help me. May you stay Higly blessed 🙌
Dear Professor Franz, thank you for your helpful and constructive lecture about the expected utility theory. May I have a few questions that I hope to receive your insights: 1) What does the first derivative of the U function have anything to do with the risk aversion/loving/neutral? For example, I understand that the risk aversion will have a negative second derivative and a positive first derivative, from which we can calculate the risk premium using Taylor expansion. So, is it a common rule to have a positive first derivative for, say, risk aversion? 2) What do you think are the common utility functions in the academic research? I just know a few, for example: The power utility function or the HARA function. 3) Can you explain the Archemidean axiom? Also, is this Archemidian axiom still in use, as I find it a bit weird when some older textbooks mentioned the Archemidean axiom while the more recent others didn't, in terms of the foundational axioms of expected utility theory that is. Thank you for your kindness for us the students. I wish the best for you and your loved ones during the Covid time :D .
Hello, I'd like to ask how to know from just the utility function (when we're not given any values) whether it is a risk loving, averse or neutral? for example, by looking at √u(W) how to know what risk preference is it and what the shape of the curve will be. thank you very much!
By taking the second (2nd) derivative of the utility function. If the second derivative is negative, risk averse. If it is zero, risk neutral. Positive, risk loving. Best luck!
Hello, professor, very insightful Given initial wealth, and 1/2 a chance to win or lose. How do I calculate the expected utility and also the expected gain?
Notice that there is a difference between "expected value" and "expected utility". For the same utility with the same expected value, different people with different risk preference (determined by their utility function) have different expected utility.
@@IrisFranz the question is as follows; An individual has a utility function given by (W) = W^1/2 and initial wealth of $100. If he plays a lottery in which he can win or lose $10 at the flip of a coin, compute his expected utility. What is his expected gain?
Is this a question from homework, take home exam, or something else? I don’t want to breach academic integrity, so here is a hint. Take the first and second order or derivatives to check. Or watch this clip. ruclips.net/video/kUMv1dYIvLw/видео.html Best luck!
Why is the utility equation formula changing each time? Shouldn't the formula for Utility function be constant no matter what type of risk a player is getting himself involved in?
Good question. In this example, I am describing three different individuals. However, even for the same individual, a person is typically more risk loving when young, and then becomes more risk averse with age (do you know that West Virginia will pay young people $100 for getting the Covid-19 vaccine? Why not paying older people? Because older people are risk averse!) Furthermore, a person is typically risk averse when it comes to gain, but risk loving when it comes to loss- check “prospect theory” in behavioral economics.
@@IrisFranz Thank you very much for the explanation. Can The marginal utility function ln(x) be generalized for all risk averse insurance premium calculations?
Last comment I promise. Let me put it this way - the discovery is the same Simon Newcomb came across. Go to LinkedIn for my credentials. There will be a story to this.
This is Lori responding back to my husband's note. Agreed with the day job! I have one as well. ;) Contacted you on LinkedIn. Appreciated your passion. Contact me back if you are interested in "seeing" the proof of what education is not teaching currently. Was not sure what to do with it. Why I reached out. If there is anything there think you should carry that message if interested. Contact me on LinkedIn if you would like to collaborate. :)
According to expected value theory, which should you prefer: a) lose $40 b) 40% chance of losing $100 Can you please answer this question and give the reason why you choose that answer? I have exam tomorrow 🥲
@@IrisFranz Your answer is according to expected utility theory right? But according to expected value theory, I need to choose the highest expected value and when I calculate the EV, both EV are 40..so, which one should I choose according to EV theory? Is it A?
![(M5E1) [Microeconomics] Introduction to Uncertainty and Risk](/img/1.gif)
There is no one on earth who can explain this concept in 7 minutes better than you. Kudos to you, Ma'am!
Thanks!
@@IrisFranz hello mam I am having issue solving two problems of macroeconomics. Could u help?
I cannot express my gratitude for this video. May God bless you. Beautifully explained !
WORDS CANT DESCRIBE HOW MUCH YOUVE HELPED. MUCH THANKS.
Glad to help. Happy learning!
@@IrisFranz Please I have a request. Can you do a video on the chapter pure market securities? which includes how to optimally allocate their wealth in terms of consumption and investment using lagrange equation.
RUclips videos are always my saviors. Thank you.
Glad to help. Happy learning!
I searched many videos this is the best.
Thanks!
The best video on the internet on this topic.
Thank you
Just wanna come by and say BIG THANK YOU to you
Glad it helped!
Thank you a million times. So clear and laconic. Perfect!
Glad it was helpful!
I am from Bangladesh. You are the best describer about this topic on the whole internet.
I just can't see why your videos do not have many views like millions even after so many years since you published them. But believe you me, you are the greatest. As I type this, I have 1 hr 30 mins into exams, but I regret seeing your videos at am eleventh hour. I believe the little I have learned will help me. May you stay Higly blessed 🙌
This is really great - please make more videos / I dont mind paying for subscription. Way better than my professor
Perfect perfect perfect.she is a master in economics . Thank u
Thank you. Happy learning!
Thank you, it’s very helpful!
Wow. Thanks ! It's so clear.
Great explanation, thank you !
Dear Professor Franz, thank you for your helpful and constructive lecture about the expected utility theory. May I have a few questions that I hope to receive your insights:
1) What does the first derivative of the U function have anything to do with the risk aversion/loving/neutral? For example, I understand that the risk aversion will have a negative second derivative and a positive first derivative, from which we can calculate the risk premium using Taylor expansion. So, is it a common rule to have a positive first derivative for, say, risk aversion?
2) What do you think are the common utility functions in the academic research? I just know a few, for example: The power utility function or the HARA function.
3) Can you explain the Archemidean axiom? Also, is this Archemidian axiom still in use, as I find it a bit weird when some older textbooks mentioned the Archemidean axiom while the more recent others didn't, in terms of the foundational axioms of expected utility theory that is.
Thank you for your kindness for us the students. I wish the best for you and your loved ones during the Covid time :D .
Love You!!!
Ok I got it! Thankyou
Great demonstrations---also from UCSB. Thank u~
Glad to help! Please share with those who find Varian’ intermediate micro challenging.
I love your teaching, new subscriber here 👍
Thanks and welcome
Very nice explanation! Thank you!
You’re welcome. Happy learning!
Thanks a lot mam, concept is easily understandable
Thanks! Very clear. 🇧🇷
Nicely explained 🎉❤ thank you it means a lot to the each learner 🎉
You helped a lot , thanks professor
You’re welcome!
Thank you so much for the videos :))
Great help for tomorrow's exam ....thanku very much 🤩
Best luck to your exam!
You are awesome ❤
Great, explanation. I get it.
sacado este video. saludos desde españa ❤
Thank you for sharing 👍🏾
You’re welcome!
Thanks a million!
You're welcome!
This is great cheers
nice one!!!
thank you
Amazing
excellent teaching.
Thanks!
Thanks a lot
You’re welcome!
Perfect ❤
Thanks and happy learning
Thank you
You're welcome! Please share with those who find economics challenging.
loved it
Thanks!
Thanks mam❤
how can i find risk tolerance at current wealth? i have given a function also u'(w)=1/w and u''=-1/w2 while his wealth is $400.. please tell me
Hello, I'd like to ask how to know from just the utility function (when we're not given any values) whether it is a risk loving, averse or neutral? for example, by looking at √u(W) how to know what risk preference is it and what the shape of the curve will be. thank you very much!
By taking the second (2nd) derivative of the utility function. If the second derivative is negative, risk averse. If it is zero, risk neutral. Positive, risk loving. Best luck!
@@IrisFranz thank youu so much!!!+
Glad to help!
How did you get the formula where U(x)=square root (x)? Same for risk lover and risk neutral where u apply other formulas
Anything that is monotonically increasing and concave would work for risk averse. Another example would be ln(x) for risk averse.
keep up the videos - from UCSB
Thanks. I actually got my Econ PhD from UCI...😄
This is good initiative to teach, well explained dear
Hello, professor, very insightful
Given initial wealth, and 1/2 a chance to win or lose. How do I calculate the expected utility and also the expected gain?
Notice that there is a difference between "expected value" and "expected utility". For the same utility with the same expected value, different people with different risk preference (determined by their utility function) have different expected utility.
@@IrisFranz the question is as follows; An individual has a utility function given by (W) = W^1/2 and initial wealth of $100. If he plays a lottery in which he can win or lose $10 at the flip of a coin, compute his expected utility. What is his expected gain?
Thankuu
Glad to help. Please share with those who find economics challenging.
😘😍🥰thanks
You're welcome!
Help!!!
Maya's utility function is U(w)= 1- a/w
Is this person risk averse or risk loving or risk neutral
a>0 and w is wealth
Is this a question from homework, take home exam, or something else? I don’t want to breach academic integrity, so here is a hint. Take the first and second order or derivatives to check. Or watch this clip.
ruclips.net/video/kUMv1dYIvLw/видео.html
Best luck!
Yup. Second derivative is negative. You got it!
@@IrisFranz thank you so much
Wealth u(W) = ROOT W, W=10, probability 0.3 to turn to 100, 0.7 to lose everything, wants to avoid risk, how much is he willing to pay? (0,1,2,3)
Why is the utility equation formula changing each time? Shouldn't the formula for Utility function be constant no matter what type of risk a player is getting himself involved in?
Good question. In this example, I am describing three different individuals. However, even for the same individual, a person is typically more risk loving when young, and then becomes more risk averse with age (do you know that West Virginia will pay young people $100 for getting the Covid-19 vaccine? Why not paying older people? Because older people are risk averse!) Furthermore, a person is typically risk averse when it comes to gain, but risk loving when it comes to loss- check “prospect theory” in behavioral economics.
@@IrisFranz Thank you very much for the explanation. Can The marginal utility function ln(x) be generalized for all risk averse insurance premium calculations?
ln(x) is monotonically increasing and concave, so it works for risk averse. Be careful, though- x must be greater than zero.
Last comment I promise. Let me put it this way - the discovery is the same Simon Newcomb came across. Go to LinkedIn for my credentials. There will be a story to this.
Hello how to make their marginal utility curve..
Take the first order derivative.
This is Lori responding back to my husband's note. Agreed with the day job! I have one as well. ;) Contacted you on LinkedIn. Appreciated your passion. Contact me back if you are interested in "seeing" the proof of what education is not teaching currently. Was not sure what to do with it. Why I reached out. If there is anything there think you should carry that message if interested. Contact me on LinkedIn if you would like to collaborate. :)
Risk Neutral topic is not include in the book of Intermediate Micro by VARIAN...
According to expected value theory, which should you prefer:
a) lose $40
b) 40% chance of losing $100
Can you please answer this question and give the reason why you choose that answer? I have exam tomorrow 🥲
If you’re risk averse, a. If you’re risk loving, b. If you’re risk neutral, you’re indifferent between the two. Good luck with the exam.
@@IrisFranz Your answer is according to expected utility theory right? But according to expected value theory, I need to choose the highest expected value and when I calculate the EV, both EV are 40..so, which one should I choose according to EV theory? Is it A?
thank you