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Economics
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The science of scarcity OR the study of choices
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Scarcity
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We have unlimited wants but limited resources
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Microeconomics
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Study of small economic units such as individuals, firms, and industries
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Positive statements
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Based on facts. Avoids value judgement (what is).
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Normative statements
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Includes value judgements (what ought to be).
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5 Key Economic Assumptions
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1. Society has unlimited wants and limited resources (scarcity).
2. Due to scarcity, choices must be made. Every choice has a cost (a trade-off).
3. Everyone's goal is to make choices that maximize their satisfaction. Everyone acts in their own "self-interest."
4. Everyone makes decisions by comparing the marginal costs and marginal benefits of every choice.
5. Real-life situations can be explained and analyzed through simplified models and graphs.
2. Due to scarcity, choices must be made. Every choice has a cost (a trade-off).
3. Everyone's goal is to make choices that maximize their satisfaction. Everyone acts in their own "self-interest."
4. Everyone makes decisions by comparing the marginal costs and marginal benefits of every choice.
5. Real-life situations can be explained and analyzed through simplified models and graphs.
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Marginal
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Additional
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Marginal Analysis
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Making decisions based on the additional benefit vs. the additional cost
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Opportunity cost
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The highest-valued alternative that we give up to get something
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3 economic questions
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What determines the quantities of the goods and services produced?
How are goods and services produced?
For whom are goods and services produced?
How are goods and services produced?
For whom are goods and services produced?
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Shortages
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These occur when producers will not or cannot offer goods or services at current prices. They are TEMPORARY.
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Price
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Amount buyer (or consumer) pays
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Cost
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Amount seller pays to produce a good
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Investment
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The money spent by BUSINESSES to improve their production
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Goods
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Physical objects that satisfy needs and wants
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Consumer goods
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Created for direct consumption (pizza)
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Capital goods
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Created for indirect consumption (ovens, knives, blenders)
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Services
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Actions or activities that one person performs for another (teaching, cleaning, cooking)
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Four factors of production
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Land, labor, capital, entrepreneurship (C.E.L.L.)
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Land
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All natural resources that are used to produce goods and services. Anything that comes from "mother nature". (Water, sunlight, plants, oil, trees, stone, animals)
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Labor
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Any effort a person devotes to a task for which that person is paid. (Manual laborers, lawyers, doctors, teachers, waiters)
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Physical capital
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Any human-made resource that is used to create other goods and services (tools, tractors, machinery, buildings, factories)
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Human capital
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Any skills or knowledge gained by a worker through education and experience (college degrees, vocational training)
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Entrepreneurship
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Ambitious leaders that combine the other factors of production to create goods and services.
1. Take initiative
2. Innovate
3. Act as the Risk Bearers so they can obtain PROFIT
1. Take initiative
2. Innovate
3. Act as the Risk Bearers so they can obtain PROFIT
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Production Possibilities Curve (Frontier or Graph)
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A model that shows alternative ways that an economy can use its scarce resources. Graphically demonstrates scarcity, trade-offs, opportunity costs, and efficiency.
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4 key assumptions of PPC
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1. Only two goods can be produced
2. Full employment of resources
3. Fixed resources (Ceteris Paribus)
4. Fixed technology
2. Full employment of resources
3. Fixed resources (Ceteris Paribus)
4. Fixed technology
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Efficient
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Anywhere on the curve of a PPC
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Inefficient (Unemployment or in a recession)
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Beneath the curve of a PPC
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Impossible (Unattainable)
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Above the curve of a PPC
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Constant opportunity cost
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Resources are easily adaptable for producing either good
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Law of increasing opportunity cost
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As you produce more of any good, the opportunity cost (forgone production of another good) will increase. Why? Because resources are NOT easily adaptable to both goods. The result is a bowed out (concave) PPC
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Productive efficiency
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Products are being produced in the least costly way (any point ON the Production Possibilities Curve).
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Allocative efficiency
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The products being produced are the ones most desired by society (socially optimal). This optimal point on the PPC depends on the desires of society.
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3 shifters of the PPC
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1. Change in resource quantity or quality
2. Change in technology
3. Change in trade
2. Change in technology
3. Change in trade
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Open vs. closed trade
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Open: access to more resources. Closed: less access to resources
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Growth
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Countries that produce more capital goods will have more _____ in the future.
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Comparative advantage
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One nation (individual/company) can produce a good at a lower opportunity cost than the other. This comes into play when one individual (nation, company...) has the absolute advantage in both.
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Output method
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Put the output of each product over the output of the other product for the same person. This makes a fraction. Look at the opportunity cost. The person with the lowest opportunity cost should produce the good that costs the least. (Output = Other goes Over)
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Never
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When will there be a situation in which someone has comparative advantage in both?
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Input method
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Divide the input required for each product into the input for the other product. Then take the one with the lowest opportunity cost. (Input = Other goes Under)
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Absolute advantage
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Who can do the most. Output: look at the LARGER number. Input: look at the SMALLER number.
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Centrally planned economies
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The government 1) owns all the resources, 2) answers the three economic questions.
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Free market
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1. Little government involvement in the economy (laissez faire = let it be).
2. Individuals OWN resources and answer the three economic questions.
3. The opportunity to make PROFIT gives people INCENTIVE to produce quality items efficiently.
4. Wide variety of goods available to consumers.
5. Competition and self-interest work together to regulate the economy (keep prices down and quality up).
2. Individuals OWN resources and answer the three economic questions.
3. The opportunity to make PROFIT gives people INCENTIVE to produce quality items efficiently.
4. Wide variety of goods available to consumers.
5. Competition and self-interest work together to regulate the economy (keep prices down and quality up).
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The invisible hand
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The concept that society's goals will be met as individuals seek their own self-interest. Competition and self-interest act as this that regulates the free market.