AEC 3133 MSU EXAM 1
Micro-economics - -Studies individual firm and household choices and behavior in
individual markets
Scarcity - -Having a limited budget, having more of one good thing means necessarily
having less of another
Scarce goods - -Goods that have higher prices and people with scare skills receive
higher wages.
Opportunity Cost - -The cost of something is not only the money you pay for it, but the
time, effort (and sometimes sanity) you give up to get is as well.
"There is no such thing as a free lunch"
Example of Oppurtunity Cost - -If you saw a $10 bill lying in the ground, would you pick
it up ?
Yes.
Why? Because the cost of doing so (spending 5 seconds of your time) is greatly
outweighed by the benefits (having $10 more to spend).
With opportunity cost, people respond based on __________. - -Incentives
Market Signals of Incentives - -Price of Coke goes up , people may buy more Pepsi.
Price of corn goes up, farmers produce less cotton.
In 1990 Congress wanted to tax the rich. They did this by taxing yachts. It didn't work,
why? - -To get away from this tax, the rich just did not buy yachts and instead bought
other items such as: cars, houses, etc.
Indifference - -All actions must be equally desirable, this describes an equilibrium where
there are no incentives for people to modify their behavior.
Transaction PRICE - -The money a buyer gives to the seller
Transaction COST - -Is any other cost the buyer or seller incurs in the transaction
Arbitrage - -The act of profiting from price differences across markets
Economists make decisions __________. - -At the margin.
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If the marginal benefits of doing something exceed the marginal costs, then do it. If not,
then don't. - -
Marginal Benefit - -The additional benefit from doing something, above and beyond
what you've already received.
Marginal Cost - -The additional cost from doing something, above and beyond what
you've already incurred.
Sunk costs - -Costs that have already been incurred and cannot be recovered no matter
what choice you make.
Example of Sunk Cost - -In deciding to come to class this morning or sleep in, you won't
get a refund on tuition no matter what you choose. That is a sunk cost.
Model - -A highly simpler representation of a more complicated reality.
Production Possibilities Curve (PPC) - -a curve measuring the maximum combination of
outputs that can be obtained from a given number of inputs
Efficiency - -getting as much benefit (or profit, output, or whatever you're trying to get)
as possible given your available resources.
There is a limit to what can be produced, given existing resources, time, etc. - -
Every choice has an opportunity cost - you get more of something by giving up
something else. - -
Increasing Marginal Opportunity Cost - -In order to get remote of something, one must
give up ever increasing quantities of something else
Examples of increasing Marginal Opportunity cost: - -Land.
A producer uses his best land first, but as his desire to increase production increases,
he brings lower and lower quality land into use. Thus, for the same yields, he will need
to work harder and harder using more and more inputs.
Specializing and trading allows others to focus on the production of the good which
each is best suited. - -For example; countries specializing in production of things for
which is better suited and trading to other counties can improve all countries.
The Food Marketing Channel - -Farm inputs, Farm processing, Food wholesalers, Food
retailers, Consumers
The Agri-Food System (Supply Chain) - -Suppliers, Farming, Processjng, Distribution,
Retail, Consumers
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