Microeconomics Review #1

Please Share    9/14/22  

1. Economics Defined

2. Economizing Scarce Resources

3. Market System Capitalism

4. Demand and Supply

5. Society's 5 Economic Questions

6. Government's Economic Functions

7. Market System Participants

AP 15 Min. Macro Review Video

AP 60 Min. Macro Review Video

1. Economics Defined Review or View  Entire Chapter 1  Print one-page chapter 1 review

I. Basic Terms
A. Economy is the social science concerned with the use of scarce resources
    like land and labor to fulfill unlimited human.
B. Resources are the inputs, want satisfaction is the output 
C. Key Concepts for understanding and analysis
         1. Scarcity of resources results in the need for choices by participants.
         2. Purposeful behavior by participants (buyers and sellers) is exhibited
             to enhance their own rational self interest.
         3. Marginal analysis where the change in benefit received is balanced with
             the change in cost is a common purposeful behavior.
         4. Fallacy of composition: applying to the whole that which is true for a part
             without adequate proof. 1 and 3 are odd numbers, so four is odd number.
This fallacy is the basis of police profiling.
Fallacy of division: This is the assumption that if something is true for the
             whole then it must be true for its parts. The absolutely worst abuse here
              involves inferring from an average that all elements are average.
         6. Post hoc fallacy: Assumption that correlation proves causation.  
             This is related to the concept in law of circumstantial evidence.
         7. Cum Hoc Fallacy :simultaneous correlations while post hoc refers
             to sequential correlations.  

D. Economic methodology 
         1. Positive economics 
             a. What something is 
             b. Objective, can be measured
             c. Example: measuring disposable personal income which is an 
                 individual's salary after taxes
             d. A Theorem on the Methodology of  Positive Economics
         2. Normative economics
             a. What something ought to be 
             b. Subjective, difficult to measure 
             c. Requires value judgments by citizens, Political Action Committees (PAC's),
                 politicians, economists, etc.
             d. Examples: should the minimum wage be increased, should defense spending
                 increase and social spending be lowered
         3. Descriptive economics
             a. Looking at the real-world to develop Economic Theory
Economic Theory
                 1. Generalizations concerning economic behavior based upon real-world
                     observations, empirical by nature
                 2. Economic theories are objective "positive economics"
                 3. Assumes behavior is rational and economic (self-serving)
                 4. Example: as the price of a product increases, consumers tend to buy less
             c. Economic Policy
                 1. Application of economic theory to solve economic problems
                 2. Economic policies are subjective, "normative economics".
                 3. How society makes economic choices such as in the 1980's when
                     a. spending for the elderly (Social Security) increased 
                     b. spending for children (Head Start) decreased 1234

Unit I. Review Economics, Resources, Scarcity, Rational Self Interest,  Marginal Analysis,
                       Fallacy of Composition,
Fallacy of Division,
Post Hoc Fallacy, Cum Hoc Fallacy

II. Economic Models
A. Definition
1. Simplified generalizations to represent of real-world economic activity
           2. Requires Ceteris Paribus: Latin for holding other economic variables constant
Ceteris Paribus Trap
       B. Designing Models
           1. Models may be quantities or qualitative
           2. Economic Models 3 minute video
3. Three Pitfalls to model analysis 
a. Restrictive, unrealistic assumptions 
b. Omitted details  
c. Are economic models falsifiable?
4. Model representations are not always correct
               a. Are economic models falsifiable?
b. Pfleiderer on The Misuse of Economic Models 1 hour podcast

               c. Models such as the Production Possibility Curve chapter 2 and supply
                   and demand, chapter 3, explained in the next chapter provide a simplified
                   description of how some aspect of an economy works.
Beware of economic textbooks 11/30/14

Unit II. Review Simplified generalizations represents real-world economic activity requiring Ceteris Paribus or holding other economic variables constant

 III. United States Economic Goals
A. Employment Act of 1946 set goals in response to a
           Soviet 5-year economic plans.
      B. Humphrey Hawkins Act of 1978 added goals.
          1. Economic growth
          2. Full employment of all economic resources
          3. Price stability (low inflation)
          4. Positive balance of payments (international flow of dollars)
          5. Economic freedom
          6. Equitable distribution of income
          7. Economic security (if you have A through F, you have G)
     C. 2016 Economic Report of the President gives the President's annual
          view on our achieving these goals. Video 1 hr. 27 min. on 2014 report

Unit III. Review Economic growth, Full employment of all economic resources, Price stability (reasonable inflation),
Positive balance of payments, Economic freedom, Equitable distribution of income Economic security

IV. Important Economic Disciplines









is the study of  total economic activity.

 is the study of individual segments
 of the economy.

Macro and Micro are 
Applied as Follows

Sources of Current Economic Information

Macro Activity Micro Activity Schools of Economic Thought
 and Methodology
2016 Economic Trends Cleveland FED
1. Inflation rate 1. A product's price Econometricians Economicpopulist.org/ Articles, Videos
2. Economic growth 2. Pollution Behavioral Economists
Behavioral Economics? 4 min Video
Regional Economist and Economic Synopses
FRED down load FED data St. Louis FED
3. Total employment 3. Poverty International Economics Library of Economic Liberty Much Stuff
4. The  business cycle 4. A competitive market Labor Economics Center for Economic and Policy Research
ACDC Introduction to Macro 1:38 Video  What is Microeconomics 1:54 Video Public Economics U.S. Political Economy one-page on varied topics
1  Wiki explanation is extensive, for now, the first few paragraphs are sufficient.

2 Wiki explanation is extensive, for now, the first paragraph is sufficient.

Financial Economics textbooksfree.org/ much free stuff


2. Economizing Scarce Resources View Entire Chapter 2   Print one-page chapter 2 review
     A. Factors of Production





Anything fixed (natural resources)



Physical and mental talents



Something physical to aid production (factories, computers, an educated/trained labor force)



Initiative, risk taking, innovation


    B. The Production Possibility Frontier (Curve) measures how many of two types of goods can be produced.

1. Static Model (time is constant, inputs are fixed)
    a. Consumer goods such as televisions, pizzas, and social security bring current satisfaction. 
     b. Capital goods such as machinery, tractors, and improved technology increase future productive capabilities.
    c. Point F on the production possibility frontier represents full employment of all resources (100% efficiency).
    d. Point U represents unemployment of some economic resources.
    e. Having more capital goods requires giving up some consumer goods.
    f. Applies to individuals as you can invest by building a deck or going to school or you can go on an expensive vacation.
    g. How society and individuals answer these economic questions is explored in chapters five and six.
2. Dynamic Model (time is not constant, inputs like factors and technology are not fixed, growth indicated by, arrows occur
    a. As inputs increase, growth occurs and the curve shifts right.
    b. Point S represents slow growth due to high consumption.
    c. Point R represents rapid growth due to high capital investment.
    d. Economic and political system chosen and run by a society determines the location and movement of these variables

       3.Opportunity costs
a. The cost of Item A measured in terms of what must be foregone of Item B.
          b. When considering doing A, we consider the highest valued alternative as limited resources means we can't afford both.
          c. For more information visit the Production Possibilities Curve from Wikipedia.
          d. Politicians seldom talk of the opportunity cost of what they plan to do.
          e. Examples
               1. The opportunity cost of good grades is the value which could have been received by  spending time with family and friends.
               2. The opportunity costs of more capital goods is the value which could have been received from having more consumer goods.
       4. Law of increasing opportunity costs
           a. Opportunity costs usually increase.
               1. To have one unit of Item A you must give up amount X of Item B. To have a second unit of Item A you must give up more than amount X of Item B.
               2. Primary reason for increasing costs is resources are not perfect substitutes.
               3. Examples
                   a) Training more people in math and science would increase productivity for a while but eventually people would be trained to be 
                       engineers who would be  more productive as managers, teachers, or entertainers etc.
                   b) Gains from replacing people with machines may be large at first but eventually machines would be used to do what people can do more efficiently.
                   c. When opportunity costs are not increasing, the production possibility curve is a straight line. 
                       High tech investment  may even bend the curve the other way and have decreasing cost, but not forever!
           b. Below is an example of the trade-off between investing people in high tech industries versus entertainment industries. 

               Alternative Production Possibilities for
10 entertainers and no technicians'.
                                                                                                    Units of Production

                     High tech                                                                        0     1     2      3     4
                     Entertainment                                                              10    9     7      4     0
             Cost of an additional unit of high tech production                          1     2      3     4
             measured in terms of entertainment given up
            Example Adam Sandler, a great entertainer,  probably would not of been a great computer programmer,
            though his dad Stan was an electrical engineer, his sister Elizabeth a dentist,  and his brother a Scott a lawyer.
            Adam might be the first resource to move to create more production.


3. Characteristics of Market System Capitalism Review  View Entire Chapter 3 Print one-page chapter 2 review
     A. Economic systems determine what to produce, how to produce, and who will receive production. 
     B. An economic system must also adapt to changing economic environments. For example, America
          must adapt to changes to September 11?
     C. Adam Smith described the beginning of capitalism. 

         1. His book, The Wealth of Nations, was the first description of capitalism. 
         2. Published in 1776, it described capitalism as it was practiced in 18th century England.
    D. Basic characteristics described by Adam Smith
        1. Private property-the right to own resources and bequeath property
        2. Freedom of enterprise-own a business
        3. Freedom of economic choice-work/not work, spend/not spend
        4. Role of self-interest
            a. People are by nature economic creatures
            b. Self-interest is a fundamental characteristic of people
       5. Competitive market system
           a. Many buyers and sellers
           b. Market participants, buyers and sellers, have little control over price
           c. Competition performs the organizing and controlling functions for a market economy
       6. Limited government ("
Laissez-faire ")
            a. Government should let markets be with a hands-off philosophy)
            b. Acceptable government involvement has become an important political question in the
                United States during the last few decades.
    E. Modern Capitalism has additional features
        1. Complex Market System Setting Prices
        2. Importance of Capital Goods and Technology
        3. Specialized
            a. Complexity requires company produce limit their product lines
            b. Division of Labor allows specialization by ability ad training.
     F. Creative Destruction described by 20th century sociologist/economist Joseph Schumpeter
          was an important addition to the idea of capitalism. 
        1. Change involves the creation of improved economic structures based on technology and the
            destruction of inefficient  economic structures.
        2. Capitalism allows this destruction to take place.

G. Economic Systems
      A. Pure capitalism as described by Adam Smith never existed.
B. Recent economic systems have are Mixed Economies  (a mixture of Capitalism  and Socialism)
1. Socialism  emphasizes collective ownership and management of economic resources that are equally distributed.
          2. Democratic Socialism, as practiced in Western Europe, has public ownership of key industries such as transportation and communication 
              a. The economic systems of Europe began moving away from socialism toward capitalism in the late 1970's
              b. Margaret Thatcher, former prime minister of England, started this trend.
              c. Ronald Reagan agreed and stressed the market system during his presidency (1981-89).
          3. Communism  is the ideal of those practicing a "Marxian system." 
              a. Named after 19th century philosopher Karl Marx
              b. The public owns almost all wealth which is centrally managed, i.e., a planned economy
c. Presidential Courage explores how Ronald Reagan deplored Communism.
      C. Traditional economy, where customs determines the economy activity, is practiced by many developing countries.

4. Demand and Supply Review View Entire Chapter 4 Print one-page chapter 4 review

       A. A market is defined as an institution or mechanism which promotes trade
            by bringing together buyers (demanders) and sellers (suppliers).
            1. Replaced barter which is the direct exchange of goods.
            2  Modern market brings money and prices into the circular flow of goods. 
       B. Demand is willingness to buy.
1. Demand is a schedule of the amounts of goods and services consumers
              are willing and able to buy at a set of prices. 
        2. Total demand is the 
Horizontal Summation of individual demand.
         3. Law of demand:: price and quantity are inversely related and as price goes up, 
                quantity demanded goes down and vice versa
          4. Why more is bought as price drops.
                  a. Income Effect: as price drops, consumers feel richer and buy more.
              b. Substitution Effect: as price drops, it becomes cheaper relative to
                  other goods and consumers buy more

    C. What determines demand   
1. Tastes or preferences of consumers    
          2. Number of consumers    
3. Incomes of consumers
 a. normal (superior) goods such as steak and vacations - more is purchased as income increases. 
 b inferior goods such as bread and hamburger - less is purchased as income increases.
4. Consumer expectations    
5. Price of related goods
a. Substitutes are goods that compete with each other such as hot dogs and hamburgers.
                 If the price of a good increases, the demand for its substitutes will increase.
   b. Complements are goods that are purchased together like hot dogs and rolls. 
                   If the price of a good increases, the demand for its complement will decrease.
''Ceteris Paribus'' is Latin for all other variables remain the same. So we change one variable at a tome.

    D. Changes (shifts) in Demand
   1. A decrease in demand shifts the demand curve to the left 
     2. An increase in demand shifts the demand curve to the right
    E. Supply is willingness to sell
1. Supply is a schedule of the amounts of goods or services producers are willing and 
             able to sell at a set of prices.
         2. Law of supply: price and quantity supplied are directly related because price and 
             expected profit are directly related
             a. As price goes up, quantity supplied goes up
             b. As price goes down, quantity supplied goes down






     F. What determines supply
1. Product costs as affected by technology, resource prices, government involvement with taxes
             and subsidies
         2. Price of related goods
             a. If 2 goods are substitutes, price up for one will increase supply of the other (price of gasoline up, 
                supply of alternative fuels increases) as companies see more potential profit
             b. If 2 goods are complements, price down of one will increase supply of other (price of PC's down, 
                 supply of computer software up) as the expected increase in sales of the first item should increase 
                 sales of the complement.
         3. Number of producer and their expectations concerning the above listed variables will affect supply
    G. Changes (shifts) in supply
         1. A decrease in supply shifts the supply curve to the left
         2. An increase in supply shifts the supply curve to the right









H. Equilibrium is where suppliers and demanders agree on price and quantity as depicted by E. 
         1. If the price is too high, a surplus results and price must be lowered
         2. If the price is too low, a shortage results. This happens with toys every Christmas
              (Cabbage Patch Dolls)
         3. If they can not agree, as happened with Beta videotape machines, then the curves do not intersect
             and the goods are not sold.
         4. Rationing function of price makes for an efficient allocation of resources.
             When competitive forces of supply and demand result in an equilibrium, a rationing function of
             goods produce to consumers has occurred.








I. How changes in supply and demand affect equilibrium price and quantity6

      J. Government Imposed Price Ceilings and Floors
          1. A price ceiling keeps prices from rising (rent control) helping renters but often
              resulting in a shortage of housing as investors seek higher returns elsewhere.
          2. A price floor keeps prices from falling (farm price supports) helps farmers
               though a surplus often results as more of supported crops are produced.


V. 5 Key Questions Society Must Answer Review View Entire Chapter 5  Print one-page chapter 5 review
     A. What to produce?
         1. Which goods
              a. Those that can be sold at a profit, consumers vote with dollars
              b. Accounting Profit: The amount by which total revenue exceeds
                  accounting costs (rents, wages, and interest)
              c. Normal Profit
                  1. Amount received for enterprise
                  2. Considered by economists to be a cost
              d. Economic Profit
                  1. The amount by which total revenues exceed all "Factor" costs. 
                  2. Some think of it as a surplus.
                  3. Expanding industries have economic profit. 
                      a) Bill Gates, founder of Microsoft, has earned many billions of dollars. 
                      b) So has Sam Walton of Wal-Mart 
         2. How many goods
             a. Level of demand and efficiency of supply determine output.
             b. Society determines total demand (who works, how often and
                 for how many years).
           c.   Success of economic system determines efficiency of supply.
    B. How to produce?
        1. Companies must be competitive
        2. Competition is the "Invisible Hand" assuring
            a. High quality goods are produced.
            b. Efficient production methods are employed.
            c. Prices and profits are reasonable.
            d. For more read
Adam Smith and the invisible hand by Helen Joyce of
                Plus magazine.
         3. Technology and innovation are instrumental to success.
    C. Who will receive production?
         1. Those willing and able to pay
         2. Function of income, savings, and attitude toward debt financing
    D. How will the economy adapt to changing environments?
        1. Today's economic environment is changing more rapidly because
           of the communication revolution. 
        2. Magnitude of these changes is similar to that which occurred in the
            last quarter of the 19th century. 
        3. Companies and individuals must "adapt or be gone." 
        4. Capitalism allows creative destruction to work. 
        5. Recently technology has changed rapidly and people are being
            adversely affected 
            a. Normally, political forces would attempt to slow creative destruction.
            b. But, the 1990's was the decade of free enterprise so creative 
               destructions moved on.
            c. Perhaps the next recession will slow down the free market 
    E. Market system evaluated
        1. Advantages are resources allocated efficiently, economic freedoms (enterprise,
        2. Disadvantages
            a. Too dependent upon competition eroded by monopoly power  resulting in waste
                 and inefficiency result because of monopoly power exercised by business,
                 unions, governments, and interest groups.
            b. Inequitable distribution of income (economic survival of the fittest)
            c. Market failure occurs 
                1. Not all costs (pollution) and benefits (public health) are properly  accounted for. 
                2. Why? because measuring their cost and benefits in dollars is difficult and
            d. Political process sometimes interferes with creative destruction.

VI. Government's Economic Function Entire Chapter 6  Print one-page chapter 6 review
       A. Provide a proper legal atmosphere (rules) for capitalism
       B. Insure competition
           1. Antitrust laws protect against abuse of monopoly power.
           2. Natural (justifiable) monopolies such as AT&T were allowed because 
               duplicating high-cost fixed investments is illogical.
           3. The emphasis on free markets discussed in chapter 3 has resulted in some natural
               monopolies being broken into smaller companies which had to compete against
               new companies touting  new technologies.
       C. Provide for an equitable distribution of income
            1. Transfer payments where a government moves general revenue to a
                specific group, i.e., Aid to Families with Dependent Children, students...
       2. Market Intervention (affecting supply and demand)  
                a. Minimum wage decreases supply raising price and lowering quantity.
                b. Excise taxes on alcohol, cigarettes, jewelry, etc., deceases supply.
                c. Farm price supports, aid to small business and education increases supply.
       D. Adjust for market failures
           1. Adjust for spillovers (externalities)
               a. Effects of a market system often spillover onto non-participants who are
                   external to the market transaction. 
               b. Both costs and benefits result.
                   1. Pollution hurts (costs) society so government tries to affect the supply of,
                       and demand for, pollution causing products such as automobiles. 
                       For automobiles, they lower supply by requiring catalytic converters and
                       they lower demand with high excise taxes. 
                   2. An educated workforce benefits society so government increases demand
                       (aid to students) and supply (aid to colleges).


VII. Market System Participants View Entire Chapter 7
        A. Households  (families and individuals) receive income in return for their 
           B. Businesses    

C. Federal government 
     1. Government spending has grown because of
         a. Population growth  b. War and defense requirements  c. Urbanization
         d. Environmental concerns  e. Inflation
         f. Transfer payments
            1. Social Security 2. Medicare and Medicaid   3. Terrorism 
            4. Social programs such as Aid to Families with Dependent Children
            5. Mid-1960's were 3% of national output, today they are 12% of output
     2. Government spending and taxing
         a. Federal spending and taxing
            1. Expenditures
               a. Income security   b. Defense (military preparedness)
               c. Interest on public debt  d. Discretionary programs
           2. Receipts
                a. Personal income taxes
                    1. Marginal rate is the rate paid on additional or incremental income. 
                        a) The increase in taxes paid divided by the increase in income. 
                        b) In a progressive tax system, each higher tax bracket (grouping) 
                            has a higher rate on the income in the higher bracket. 
                    2. Average tax rate is the taxes paid divided by total taxable income. 
                b. Payroll Taxes: premiums paid on compulsory insurance plans  
                    1. social security and Medicare (both employer and employee pay)  
                    2. unemployment taxes (just employer pays)
                c. Corporate Income Taxes
                d. Excise Taxes are a sales tax on items such as jewelry, tobacco, and liquor.
                e. Licenses and Fees
State and local governments have mandatory balanced budget laws making 
     the accumulation of debt difficult

E. Taxation philosophies 
     1. Ability to pay  taxes those with the ability (income or wealth) more.
         a. Income tax      b. Sales tax    c. Estate taxes
     2. Benefit received (User taxes)
         a. Those who derive a benefit from some government action pay for said activity.
         b. Examples
             1. Gasoline taxes are used to improve roads.
             2. Social security taxes are used to provide retirement and other benefits for
F. Taxation philosophies
     1. Ability to pay
         a. Those with the ability (income or wealth), pay more.
         b. Examples
             1. Income tax   2. Sales tax   3. Estate taxes
     2. Benefit received (User taxes)
         a. Those who derive a benefit from some government action pay for said activity.
         b. Examples
             1. Gasoline taxes are used to improve roads.
             2. Social security taxes are used to provide retirement and other benefits
                  for participants.
G. Types of tax rates
     1. Progressive
         a. Tax rate increases as income increases
         b. Tax rate decreases as income decreases
         c. Those earning higher income pay a higher average tax rate.
         d. Example: Federal Income Tax                
Moving into a higher tax bracket does not result in your paying a
              higher rate on lower bracket earnings.
     2. Proportional
         a. Tax rate as percentage stays the same.
         b. Examples: Social Security taxes are proportional up to the maximum income
             level of about  $76,200 because both employer and employee pay a constant
             rate of about 8%, but then the tax is regressive as the rate drops to zero
     3. Regressive 
         a. Amount paid divided by income drops as income increases.
         b. Happens one of two ways
             1. Rate drops as income increases (FICA after about $76,200 in 2000) 
             2. Amount of tax is constant so at higher incomes, the effective tax rate
                 is lower (excise taxes on cigarettes, liquor, etc.)
H. Shifting the tax incidence
   . 1. Passing the burden of taxes onto others (consumers ultimately pay)
     2. Businesses and professionals try to do this
     3. The consumer bears most of the tax burden in a market economy