ECON 1B03 Chapter Notes - Chapter 1: Kijiji, Decision-Making, Planned Economy

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ECON 1B03: Pg. 1-7
Textbook Notes: 18/Sep/2017
Chapter 1: Introduction
Main Concepts and Definitions:
Economics: is the study of how society allocates scarce resources to satisfy people’s unlimited wants
Resources: are anything used to make something else. [known as: Factor of production (FoP) or
Inputs into production.].
The four main categories of resources are:
• Labour
• Land
• Capital [buildings, machines, technology]
• Entrepreneurship
Scarce: the quantities of resources limited in supply.
Example: a good has a price, then it is Scarce.
Decision making is done by people. Citizens have to believe that those decisions are made because
they are the best. We assume that they are rational.
Economic rationality: when people use the info they have to make the best decision. The info that is
provided is not always complete or accurate.
• Perfect information: everyone knows everything the need to know, without any missing or
fake parts
• Asymmetric information: info known to someone but not to an another
Example: [selling a personal car on Kijiji]
How do economically rational people make decisions?
• They think at the margin: thinking incrementally, in terms of doing one more something.
• “what if I ate 10 more pieces of pizza?” → “what if I ate one more piece of pizza- what would
that add to my satisfaction of the meal?”
• “what if our firm produces 2000 more calculators?” → “what would be producing one more
calculator add to our total weekly profit?”
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ECON 1B03: Pg. 1-7
Textbook Notes: 18/Sep/2017
Making a decision means making a choice; where you provide scarcity [giving up something for
something else]
• Opportunity cost: is the cost of everything you give up to get something else.
o Example: [ watching one hour of T.V means giving up one hour of studying
• Best forgone alterative: which on the things you gave up had more value/cost?
o Example: [Instead of watching T.V, you could have studied, cleaned, etc.]
o Hockey game ticket costs $250, instead you could have worked for a few hours and
made $4400 in wages and tips. Therefore, your opportunity cost is 250(ticket) plus the
value of best forgone alternative- the $400 from work. Your total opportunity cost of
going the game is $650.
• Explicit cost: a direct payment made to others
o Example: [the money you paid for the ticket]
• Implicit cost: which are those where no actual payment is made.
o Example: [lost wages from not working]
As a society, do we always use our scarce resources for the best?
❖ Yes: we are using our resources efficiently.
❖ No: wasting resources
One way we measure if we use our resources efficiently is by examining the market:
• Market: the place where buyers and sellers gather.
o Example: eBay, stock market, shoppers
o In capitalist countries: free market: where all decision-making is decentralized
• Centrally planned economy (command economy): a central authority (government) dictated
how resources would be allocated for production and consumption
o Example: USSR
• Mixed economy: mostly free market but has some industries that are government owned
o Example: In Canada, GO transits are government owned.
Microeconomics
Similarities
Macroeconomics
Define:
Deals with decision making
at individual level
Example:
How households and
individual firms make
economic decisions about
consumption and production.
Both fields of econ rely on the
use of models to help explain
or predict outcomes. Models
can explain how an economy
works, they can be used to
predict what would happen in
market or in an entire
economy if some economic
factor changes.
Define:
Looks at economy-wide
phenomena like
unemployment, interest rates,
inflation, and aggregate output
and demand.
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