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Microeconomics Unit 3 COMPLETE Summary - Production & Perfect Competition 

ReviewEcon
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This video covers all of the key points of Unit 3 from the AP Microeconomics Course Exam Description (CED). Short-costs, Long-run cost, accounting vs economic profit, profit maximization, firm's supply curve, market long run supply.
For more help with unit three, there are content reviews, review games, and practice exercisesfor you at: www.reviewecon...
To support this channel, like and subscribe, then purchase the Total Review Booklet from ReviewEcon.com.
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Note: Topics are out of order because this is the oder in which they are covered in the ReviewEcon.com Total Review Booklet.
Note: AP©, Advanced Placement Program©, and College Board© are registered trademarks of the College Board, which was not involved in the production of, and does not endorse, this material.

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5 сен 2024

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Комментарии : 155   
@arjundulam6354
@arjundulam6354 3 года назад
Omg, you summed up 2 weeks of mind-numbing lectures into 20 minutes of fast-paces learning. You’re very talented.
@ReviewEcon
@ReviewEcon 3 года назад
My own lectures can get there. You're too kind. Thank you! Good luck with your exams!
@Ogbrainded
@Ogbrainded Год назад
@@ReviewEcon i think i failed my exams...
@ReviewEcon
@ReviewEcon Год назад
Oh no!! 🤞🤞🤞 You did well!
@albusdumbledore6669
@albusdumbledore6669 2 года назад
Sometimes I feel pity on this world who don't respect the real talent like you. Dear Brother you deserve more recognition and thanks for everything.
@ReviewEcon
@ReviewEcon 2 года назад
Thank you so much for the kind words! They mean a lot to me.
@krispotato1409
@krispotato1409 Год назад
I very much agree with you @Albus
@user-nk8zx1yw8s
@user-nk8zx1yw8s 2 года назад
Thanks for teaching 3 weeks of class lectures in 20 minutes
@ReviewEcon
@ReviewEcon 2 года назад
You're welcome! 😀
@user-nk8zx1yw8s
@user-nk8zx1yw8s 2 года назад
@@ReviewEcon Learned the whole unit in a couple days because of poor time management, but I got a 90% on the unit test due to your video. Thanks so much!!
@ReviewEcon
@ReviewEcon 2 года назад
@@user-nk8zx1yw8s That's awesome! Way to go!
@morrish044
@morrish044 6 месяцев назад
fr
@MelissaFortune
@MelissaFortune 3 месяца назад
Brother you are a God send sir!!! I've been in college all my life I enjoy school and as an entrepreneur I just go to classes to make sure I'm better at my offerings in the market that being said this was the first class of all of the classes that I flunked given the teacher was total no response so any questions were never addressed by him. So not only am I put output thousands of dollars because I'm an out-of-state client with my GPA and with my lack of degree because that was the last class I was waiting on to pick up a degree I found your channel I'm so appreciative and graphs is what's killing me because for whatever reason although I'm an intelligent I cannot get these economic graphs down it's like no matter what I could think that I understand I try to put it on paper it's just doesn't work out but finding your channel has been such a blessing thank you thank you thank you thank you
@ReviewEcon
@ReviewEcon 3 месяца назад
I'm sorry you haven't had great success so far, I sure hope my videos are helpful! I always tell my own students. Economics (at least micro and macro principles) is extremely difficult... until it's not! Then, it's easy. When it clicks will be different for everyone, but you can definitely get it. I wish you the very best of luck! 🤘😎😄
@atharvadharphale5710
@atharvadharphale5710 3 года назад
These videos are awesome! Thank you so much, this is helping me a lot to prepare for my Econ test!
@ReviewEcon
@ReviewEcon 3 года назад
Good luck with that test!
@fabiohaiduc9984
@fabiohaiduc9984 Год назад
I always come to you for the Unit reviews, which are very effective. 2x speed makes 5 class periods of information take 10 minutes and everything is clear and makes sense. Appreciate it.
@ReviewEcon
@ReviewEcon Год назад
Perfect! Some people think I talk too fast, others think I talk too slow. Speed adjustment is the key! 😄
@tubbs2132
@tubbs2132 3 года назад
I've been watching these in place of my online review classes, you have a good talent for teaching.
@ReviewEcon
@ReviewEcon 3 года назад
Thank you! Good luck with your exams!
@chantalnawar4728
@chantalnawar4728 4 месяца назад
ive been binge watching all your videos to get ready for the ap exam and i just want to say i really appreciate you reading every comment and answering them in all your videos. its not easy to keep track of so many topics and shows your dedication to teaching so thank you!
@ReviewEcon
@ReviewEcon 4 месяца назад
Thank you very much for your kind words! 😄 Take care and good luck with this year's exams!
@Zorolostonceagain
@Zorolostonceagain 5 месяцев назад
I fell behind because our Exam is at the beginning of May, and im still on module 4, but I didnt do the Module 3 exams, your videos are gonna be the only things saving me from my horrible lessons, and I can actually catch up because everything is easily summarized. Thanks so much, I would be quitting this class if I didnt have these videos honestly
@ReviewEcon
@ReviewEcon 5 месяцев назад
I'm glad my videos are helping! Good luck on your exams!
@aerospaceguy4639
@aerospaceguy4639 4 месяца назад
There might be a mistake at 16:47 I think you meant to say 'Minimum of ATC curve' instead of AVC, which is what you said. I'm not sure if Its a mistake on my part by I was thrown off sync by this. And it should be MinATC for the LR. Please check on this. Still a big fan of your life saving content regardless!
@ReviewEcon
@ReviewEcon 4 месяца назад
Good catch! I just editted out the word variable to fix it and avoid that confusion. Thank you for letting me know about that error!
@yijiazhang1782
@yijiazhang1782 3 года назад
me before watching this video: pure confusion after watching your video: woah! I actually have a brain that works! Thank you, thank you, thank you!!
@ReviewEcon
@ReviewEcon 3 года назад
So glad it helped! Good luck with your exams!
@DeRoxanz
@DeRoxanz 2 года назад
i have my unit 3 test tomorrow, inshallah i will continue with updates, and inshallah allah guides me to an amazing grade
@ReviewEcon
@ReviewEcon 2 года назад
Good luck on that test!
@iyee968
@iyee968 11 месяцев назад
thank you so much for the clear review! I usually fall asleep when I listen to lecture videos, but this video was so interesting that I got through it with my eyes wide open. :)))
@ryanbarber4123
@ryanbarber4123 4 месяца назад
This guy is the only reason i will pass the AP test!!
@ReviewEcon
@ReviewEcon 4 месяца назад
Good luck on Tuesday!
@ryanbarber4123
@ryanbarber4123 4 месяца назад
@@ReviewEcon What is the biggest thing that we need to know for the test?
@andreamarquez5020
@andreamarquez5020 3 года назад
Thank you so much for helping me out, you explained the information so well!
@ReviewEcon
@ReviewEcon 3 года назад
You're welcome! Good luck with your exams!
@user-mx3vl9sd8r
@user-mx3vl9sd8r 7 месяцев назад
You are actually an amazing person, the lessons were very helpful. Midterms in 2 days, still probably gonna fail!
@ReviewEcon
@ReviewEcon 7 месяцев назад
You got this! Good luck!
@xecten9445
@xecten9445 4 месяца назад
Error at 7:03, TC/Q = ATC on line 3 is incorrectly recorded as 10.3. When Q = 3, TC = 34, therefore ATC should equal 34/3 = 11.33 instead of 10.3 Overall very helpful video series, I've used it last minute before my test and I couldn't be more gracious.
@ReviewEcon
@ReviewEcon 4 месяца назад
Good call! I'll be fixing that for next year. I hope it didn't throw you off too much! Good luck tomorrow!
@marianafernandez5946
@marianafernandez5946 3 года назад
If I pass today it is going to be thanks to you
@ReviewEcon
@ReviewEcon 3 года назад
🤞🤞🤞 Good luck!
@krispotato1409
@krispotato1409 Год назад
You make the lessons very understandable, concise, and fun to learn! Thank you very much brother. also the games in the website are really helpful to test your understanding, kudos to the whole team!
@ReviewEcon
@ReviewEcon Год назад
You're very welcome! I am so glad you've found it all helpful! I'll let the whole team know (just me 😉)!
@krispotato1409
@krispotato1409 Год назад
@@ReviewEcon wow, i did not expect that haha 💯
@rupinghosh5093
@rupinghosh5093 3 года назад
2:21 Shouldn't the Marginal Product be 10 instead of 9? TP went from 36 to 46, so 10/1 = 10. Btw, you make this class so much easier to understand, rewatching them all before the exam. Thank you for making these.
@ReviewEcon
@ReviewEcon 3 года назад
Yep! Clear typo in my table. Thank you! I'll make a new version soon.
@ReviewEcon
@ReviewEcon 3 года назад
And good luck on your exams!
@iris-hb9qs
@iris-hb9qs 4 месяца назад
thank you so much for sharing this amazing resource! its really been helpful for me to review 🥰
@ReviewEcon
@ReviewEcon 4 месяца назад
You're very welcome! Good luck on your exams!
@nazl7354
@nazl7354 Год назад
I'm so happy to find your channel. It's my first year as an econ student and some topics was confusing a lot for me. But not anymore cause the videos are really helps. So much loves from Turkey ♥
@ReviewEcon
@ReviewEcon Год назад
I am so glad my videos helped! Good luck on your studies!
@flamedomegamer537
@flamedomegamer537 2 года назад
Thank you so much I am watching again and again and again ,I have 60 marks for micro plus macro ,in my exam ,40 marks are from other branches , I am planning to get as much as possible from micro,macro, your videos are helping me allot
@ReviewEcon
@ReviewEcon 2 года назад
Awesome! Good luck!
@pranavch17
@pranavch17 4 месяца назад
Thank you!!
@ReviewEcon
@ReviewEcon 4 месяца назад
You're very welcome!
@user-vg1ve5mh8k
@user-vg1ve5mh8k 6 дней назад
Am also happy with your service sir .
@ReviewEcon
@ReviewEcon 6 дней назад
Thank you! 😄
@kourosh5165
@kourosh5165 9 месяцев назад
Thank you so much for your hard work you saved me so much confusion this was an amazing review!
@ReviewEcon
@ReviewEcon 9 месяцев назад
You're very welcome! Good luck with your exams!
@alimadi9053
@alimadi9053 6 месяцев назад
Back here for another test, thanks for the video
@ReviewEcon
@ReviewEcon 6 месяцев назад
You're very welcome! Good luck on this test!
@peltonting16
@peltonting16 9 месяцев назад
this was so helpful, your summaries are perfect! thank you!
@ReviewEcon
@ReviewEcon 9 месяцев назад
You're very welcome! Thank you for watching!
@RyanReynolds-_-420
@RyanReynolds-_-420 4 месяца назад
Thanks for this guide. I will most likely still fail but at least since I crammed all in 1 day but I will have some idea on the test. Will let you know if I get a 3😭
@ReviewEcon
@ReviewEcon 4 месяца назад
🤞🤞🤞 good luck! 😄
@sulagnapalit4951
@sulagnapalit4951 3 года назад
5:49 What is the difference between Marginal Cost and Marginal Cost of Labor?
@ReviewEcon
@ReviewEcon 3 года назад
Good question! Marginal cost is the change in total cost (or total variable cost) as for producing one more unit (change in total cost divided by change in quantity). Marginal cost of labor , on the other hand, only focuses on the labor portion of the marginal cost. Marginal cost of labor is the wage divided by the marginal product of labor. On the AP Micro exam, these sorts of questions usually assume labor is the only variable cost. Then, marginal cost and marginal cost of labor will be equal.
@sulagnapalit4951
@sulagnapalit4951 3 года назад
@@ReviewEcon Thank you for clearing that up for me!
@ReviewEcon
@ReviewEcon 3 года назад
You're very welcome! Good luck with your exams!
@gummi3128
@gummi3128 Год назад
Thank you so much for everything you do. You have literally helped me SO MUCH
@ReviewEcon
@ReviewEcon Год назад
You're very welcome! Good luck with your studies!
@arjunmandloi2433
@arjunmandloi2433 4 месяца назад
Thanks for the video. I just have a quick question. What do the P (Y-axis) and Q(X-axis) represent on the graph?
@ReviewEcon
@ReviewEcon 4 месяца назад
P is price and Q is quantity! We use these two labels on most microeconomics graphs.
@arjunmandloi2433
@arjunmandloi2433 4 месяца назад
@@ReviewEcon Thanks so much for the clarification! I was wondering, what is your advice on understanding microeconomics course information really fast. I kind of waited until there was a remaining month before the test.
@ReviewEcon
@ReviewEcon 4 месяца назад
@@arjunmandloi2433 I'd say it really depends on your underlying knowledge. If you already took the class, you may want to start with the crash review video, to help you identify where you might struggle. Then I would focus on as much MC and FRQ practice as possible. FRQs are available from the CB and some MC practice is on ReviewEcon.com. Good luck!
@arjunmandloi2433
@arjunmandloi2433 4 месяца назад
@@ReviewEcon Thank you so much man. I will for sure let you know what I get on the exam!
@saraabdii9268
@saraabdii9268 3 года назад
Once again beautifully explained thank you!
@ReviewEcon
@ReviewEcon 3 года назад
You're very welcome!
@zenon1177
@zenon1177 5 месяцев назад
19:57 wait so firms only have to pay fixed costs when they shut down? btw thank you for the vids they are really helpful!
@ReviewEcon
@ReviewEcon 5 месяцев назад
Yes, if a firm shuts down (different from exciting the market) they lose the fixed costs. Fixed costs are by definition paid when zero units of output. I hope that helps!
@forthechickens
@forthechickens 3 года назад
Thx for helping me pass my dba
@ReviewEcon
@ReviewEcon 3 года назад
You're welcome! I'm glad my videos helped!!
@patrickbanda8097
@patrickbanda8097 11 месяцев назад
Thank you very much 🥰
@ReviewEcon
@ReviewEcon 11 месяцев назад
You're very welcome! Good luck with your studies!
@giulias7017
@giulias7017 9 месяцев назад
Ty for the great video!
@ReviewEcon
@ReviewEcon 9 месяцев назад
You're very welcome!!
@sourpatchkid2691
@sourpatchkid2691 2 года назад
this helped so much thank you!!!!
@ReviewEcon
@ReviewEcon 2 года назад
Awesome! You're welcome!
@WarriorBane
@WarriorBane 2 года назад
Thnx
@ReviewEcon
@ReviewEcon 2 года назад
You're welcome!
@uuiena
@uuiena 4 месяца назад
love ya review econ
@ReviewEcon
@ReviewEcon 4 месяца назад
Aww! Thank you! ❤️ Good luck on your exams!
@anshchellani615
@anshchellani615 5 месяцев назад
lifesaver ong thx man you're a g
@ReviewEcon
@ReviewEcon 5 месяцев назад
You're very welcome!
@evelyn1666
@evelyn1666 Год назад
In which chapter did you talk about the two types of efficiency?
@ReviewEcon
@ReviewEcon Год назад
Allocative efficiency is first introduced in 2.8. Both are discussed in 3.7 perfect competition. For a firm, productive efficiency means the firm is producing the quantity found at the minimum of the average total cost curve where ATC = MC. Allocative efficiency means that the firm is producing where marginal cost equals the price. Where D=MC. In unit 6, allocative efficiency is further defined as being where marginal social cost equals marginal social benefit. In a market with no externalities, the demand curve is the marginal social benefit curve and the supply curve is the marginal social cost curve. Allocative efficiency is also called socially optimal. I hope that helps! Good luck with your exams!
@ReviewEcon
@ReviewEcon Год назад
In this video I discuss it at around 18:23. 😀
@luisvillasenor6310
@luisvillasenor6310 3 года назад
Thank you I should have watched you for macro.
@ReviewEcon
@ReviewEcon 3 года назад
I hear that macro exam was tough! Good luck with micro!
@luisvillasenor6310
@luisvillasenor6310 3 года назад
@@ReviewEcon the multiple choice was brutal. The FRQs were a lot better. It's a bit late for me to buy your review packet, but I'll let other people who take macro/micro to check you out for next year.
@gerardtyson2274
@gerardtyson2274 Год назад
7:00 math error, should be 11.3 for ATC when Q = 3 and TC = 34. Not that it affects the lesson, anyway.
@ReviewEcon
@ReviewEcon Год назад
Thanks for that catch! I will fix that and upload a new version in a few months.
@7x6v69
@7x6v69 3 года назад
nice videos!
@ReviewEcon
@ReviewEcon 3 года назад
Thank you!
@LifvingConnoisseur
@LifvingConnoisseur 3 года назад
Wow very informative
@ReviewEcon
@ReviewEcon 3 года назад
Thank you! If you have any questions, please ask them in the comments.
@nargizmusazadeh8419
@nargizmusazadeh8419 8 месяцев назад
soo soo good explanation>3 keep going!!
@ReviewEcon
@ReviewEcon 8 месяцев назад
Thank you! Good luck with your studies!
@newfireidk6065
@newfireidk6065 2 года назад
Hello sir this is me again I'm a bit confused about profit maximization Like why is the profit in the end maximized when MR intersects with MC ? Wouldn't the marginal revenue you receive just cover the additional marginal cost ? Let's imagine a scenario where a product named 'A' is sold at the price of 2 dollars and the cost to produce it is also 2 dollars How is the profit maximized in this scenario then ?
@ReviewEcon
@ReviewEcon 2 года назад
It's true there is often (with real numbers) no difference in profit between the MR=MC quantity and the previous unit. But the graph assumes infinite decimals of units. As long as MR>MC profit increases with that unit (or even fraction of a unit). You can be sure profit is maximized if you continue to produce until MR=MC. You could see questions with real numbers where MR never equals MC. Then, you just produce the largest quantity where MR>MC, but not the next unit where MC>MR. A Firm should keep as long as MR is > or = to MC. A Firm should never produce when MR
@newfireidk6065
@newfireidk6065 2 года назад
@@ReviewEcon I finally understand it now Thanks a lot!
@nithinacademy1646
@nithinacademy1646 2 года назад
Very talented
@ReviewEcon
@ReviewEcon 2 года назад
Thank you!
@newfireidk6065
@newfireidk6065 2 года назад
Afternoon Sir I am currently having troubles understanding variable and marginal cost Whyy isn't the variable cost in 5:09 proportional to the amount of unit produced ? Let's say that the ingredient cost for a Hotdog is 10 dollars That means that the cost for the amount of ingredients I need to make 4,5,6... hotdogs is 40,50,60... Also, is the law of diminishing returns the reason behind the fluctuations of the variable cost ? Too much employees -> Lack of productity / decrease in efficiency ---> more cost to produce one additional unit ?
@ReviewEcon
@ReviewEcon 2 года назад
The marginal cost is the change in total cost for producing one more unit while variable cost (total variable cost) is the sum of the variable cost for each unit produced. The variable cost generally increases at an decreasing rate at low quantities then increases at an increasing rate. That's why marginal cost (the change in TC and change in TVC) decreases at low quantities (also due to specialization) and increases at high quantities (also due to diminishing marginal returns). I hope that helps a bit!
@pxsoul888
@pxsoul888 Год назад
Best channel
@ReviewEcon
@ReviewEcon Год назад
Aw! Thank you! Good luck with your studies!
@drewgoodove3259
@drewgoodove3259 3 года назад
Very helpful!
@ReviewEcon
@ReviewEcon 3 года назад
Glad to hear it! Good luck on your exams!
@Spxrkyfv
@Spxrkyfv 2 года назад
So helpful
@ReviewEcon
@ReviewEcon 2 года назад
Awesome! Good luck on your exams!
@Spxrkyfv
@Spxrkyfv 2 года назад
@@ReviewEconThank you
@sergiog.899
@sergiog.899 2 года назад
i got my college exam in less than an hour wish me luck
@ReviewEcon
@ReviewEcon 2 года назад
Good luck!! 🤞🤞🤞
@Deeznutsq
@Deeznutsq 4 месяца назад
14:57
@ReviewEcon
@ReviewEcon 4 месяца назад
Perfect competition bookmark coming at you! Good luck on your exams!
@slimmyTM
@slimmyTM Год назад
13:00
@ReviewEcon
@ReviewEcon Год назад
Good luck on your exams!
@slifer4963
@slifer4963 4 месяца назад
If I pass, I will forever be in your debt.
@ReviewEcon
@ReviewEcon 4 месяца назад
Let's hope for that! 😅 Good luck tomorrow!
@bwalyachisala2370
@bwalyachisala2370 Год назад
dont you have videos for intermediate micro
@ReviewEcon
@ReviewEcon Год назад
Unfortunately I do not have intermediate videos at this time. 😢 Intro micro and macro is the focus for now. Maybe some day!
@Vaten0x
@Vaten0x 3 года назад
Someone who disliked: I DIDN'T STUDY PROPERLY NOO
@ReviewEcon
@ReviewEcon 3 года назад
🤷‍♂️
@lilysolano5794
@lilysolano5794 3 года назад
so swag
@ReviewEcon
@ReviewEcon 3 года назад
Thank you!
@quytrinh2653
@quytrinh2653 3 года назад
❤️
@ReviewEcon
@ReviewEcon 3 года назад
Thank you!
@Interventionroblox
@Interventionroblox 4 месяца назад
MR = MC JUMPSCARE 🤕
@ReviewEcon
@ReviewEcon 4 месяца назад
😅
@Tactyoh
@Tactyoh 3 года назад
Who’s here on 2021 exam day
@ReviewEcon
@ReviewEcon 3 года назад
Good luck!!
@bistroshan7198
@bistroshan7198 3 года назад
😄😃👍
@ReviewEcon
@ReviewEcon 3 года назад
Thank you!
@sharshaf2377
@sharshaf2377 Год назад
13:10 😂
@ReviewEcon
@ReviewEcon Год назад
The best special effects ever! 🤦😅
@bigoldchub4953
@bigoldchub4953 3 года назад
You talk like Wiley from tiktok
@ReviewEcon
@ReviewEcon 3 года назад
I'm gonna assume that's a good thing? 🤷‍♂️😉 Thanks for watching!
@bigoldchub4953
@bigoldchub4953 3 года назад
@@ReviewEcon Yeah hes the best
@chinachu733
@chinachu733 Год назад
bro you made me fail the exam
@ReviewEcon
@ReviewEcon Год назад
Oh wow! I'm sorry it didn't go well. 😢 What was on your class exam that isn't covered in my videos?
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