Economics Study Guide 5
Economics Fundamentals:
Economics
The study of (behavior) how people try to satisfy what appears to be seemingly unlimited and competing wants through the careful use of relatively scarce resources
Need vs. Want
Need-something required for survival (food, water, shelter)
Want- a way of expressing a need
Scarcity
The condition that results from society not having enough resources to produce all of the things people want
4 factors of production *all must exist for production to occur*
Land-anything that occurs naturally
Capital- the tools, machinery, products etc. that are used to make other goods and services; man-made
Labor-people with all their efforts and ability; always most expensive
White collar-professional; high skilled
Blue collar-no/low skill; manual
Entrepreneur- a risk taker who does something new with existing resources (inventor)
TINSTAAFL
There is no such thing as a free lunch
Nothing is ever free because resources were used (ex: time, energy, transportationâ¦)
3 basic questions
What to make?
How to make it?
For whom to make it?
Allocation of resources:
Competition, random, personal choice, price, divide equally, first come first serve
Goods and services
Good-a tangible item that has an economic value
Final (consumer) goods- the products at the end of production
Capitol (intermediary) goods- the tools, machinery etc.
that are used to create final goods and services
Service- an action that one person does for another (intangible)
Value, utility, wealth
Value- something that can be expressed in $ and cents
2 criteria to have value:
Scarce, must provide utility
Utility- having a function or provide personal satisfaction
Wealth- an accumulation of those items that are tangible, scarce, provide a utility; must be transferrable from one person to another
Tradeoffs and opportunity cost
Marginal analysis (thinking on the margin)- the point at which you have to make a choice
Tradeoffs- all the other things you did not choose when making a choice
"choosing is refusing"
Opportunity cost- the next best choice that you did NOT choose
If mc > mb don't do it
If mc < mb do it
c=cost b=benefits
buyer's remorse
(Theoretical) circular flow of economic activity
Static model- data represents a specific time (supply and demand) (snapshot)
Dynamic model- model that changes over time (economic activity[above^^])
Market-a place where goods and services are exchanged
Product market- final (consumer) goods and services
Factor market-where factors or production are bought and sold
Revenue-the total amount ($) brought in [from consumers]
Revenue-expenses=profit (for business)
Economic systems
Traditional economy-the 3 essential questions are answered by traditions and customs of that group of people (Amish)
Very conservative and patriarchal (men run the government)
Command economy- dictatorship, communism, socialism; 1 person or a very small group answers the 3 essential questions (N. Korea)
Free Market/ Capitalism- consumers and producers answer the 3 essential questions through supply and demand
Influenced by traditions
Microeconomics
Demand
Demand- the want, willingness, and ability to trade or purchase a good or service
Demand affected by:
Price, convenience, tradition, function, popularity (trend/peer pressure), style, advertising/marketing, quality
A consumer is always right
The supplier needs to adapt to the customer
Action and inaction send a message to the market
Graphing demand
Demand schedule- a schedule (chart) showing how much of a good or service people will purchase at any (given) price during a specified time period, other things being constant
Price $ | Quantity Demanded | ||
1 | 5 | 6 | 4 |
2 | 4 | 5 | 2 |
3 | 3 | 2 | 0 |
4 | 1 | 0 | 0 |
5 | 0 | 0 | 0 |
Law of Demand- the quantity demanded is inversely related to price holding other factors constant
Always a negative slope
Demand vs. QD
Demand=range of prices
QD=given price
Change in QD
Caused by a change in price
Movement is along the demand curve
Change in demand-when more or less is demanded of a good or service at every given price
Entire curve shifts left or right
Right=positive shift
Left=negative shift
What causes the demand curve to shift:
Taste and preference
Income
Normal goods- demand rises as income rises (most goods)
Inferior goods- demand falls as income rises (Walmart)
Number of consumers
Price of related goods
Adequate substitutes
If the price of the substitute goes up, the original product will be in higher demand
Complement
If the price of the complement goes up then the price of the product goes up
Computer software, milk for cereal
Price expectations
Elasticity of demand
Elasticity-sensitivity to a price change
Demand elastic- sensitive to price change (no adequate substitutes)
Demand inelastic-not sensitive to price changes (many adequate substances)
Supply
Supply- a price/quality schedule showing amounts of a product producers are willing and able to make available for a set of prices during a specific time period
Quantity supplied- the amount that producers bring to market at any given price
Law of supply- the principle that suppliers will normally offer more for sale at higher prices and less at low prices
Direct relationship between price and quantity supplied
Change in QS
Caused by a change in price
Movement along the supply curve
Change in Supply
Caused by change in supplied
Movement of entire curve
Reasons for shift in supply
Cost of inputs (4 factors of production)
Productivity
Technology
Taxes
Subsidies-a payment for an economic activity (scholarship)
Expectations- anticipated level of demand
Government regulations
Number of sellers
Market clearing price/equilibrium price-the price at which two people compromise on when bargaining
Surplus=too many goods made
Shortage=too few goods made
Production Considerations
Profit formulas
revenue-expenses=profits (supply/ businesses)
total amount of money brought in
income-expenses=disposable income (people/family)
Productivity- an economic measure of output per unit of input
Productivity=efficiency
Inputs include: labor and capital
Output measured in revenues and other GDP (gross domestic product) components such as business inventories
Examined collectively (whole economy) or industry by industry to examine trends in labor growth, wage levels, and technological improvements
Cost of production (expenses)
Fixed costs-the costs associated with the product that has to be paid regardless of the volume you sell (contract!!)
ex: rent, taxes, salary/waged employee, cell phone
variable costs- a corporate expense that varies with production output, costs that vary depending on a company's production volume; rise as production increases, fall as production decreases
ex: utilities (electric, water), food, hourly employee
Business/ Company structures
sole proprietorship- one legal entity owns the company (person, family)
partnership- two or more legal entities who own the business (law firm, doctor offices)
have a contract
corporation-creating its own entity (virtual person)
sell stocks ($$ quickly)
reduces risk (of liability)