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Chapter 1:
What Is Economics?
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Chapter 1: What Is Economics?
• Scarcity
• Factors of Production
• Decision Making
• Opportunity Cost
– Production Possibilities Curves
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Chapter 1: What Is Economics?
• Scarcity
• Factors of Production
• Decision Making
• Opportunity Cost
– Production Possibilities Curves
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Section 1: Scarcity & Factors of Production
• People make choices– How to spend time & money
• Needs– Things necessary for survival
• Air, food, shelter
• Wants– Things desired, but not essential to survival
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Section 1: Scarcity & Factors of Production
• Scarcity requires people to make choices– Resources are limited
• money and time• goods and services
• Economics– The study of how people seek to satisfy their needs &
wants by making choices
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Section 1: Scarcity & Factors of Production
• Scarcity– Limited quantities of resources to meet unlimited
wants• Supply and demand• Scarcities always exist
• Economics is about solving the problem of scarcity
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Section 1: Scarcity & Factors of Production
• Scarcity and shortage are not the same
• Shortage– When a good or a service is unavailable
• Because producers cannot or will not offer them at current prices
• Can be temporary or long-term
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Section 1: Scarcity & Factors of Production
• Factors of production– Resources that are used to make all goods and
services
• Land– All natural resources used to produce goods
and services• Labor
– Effort that people devote to a task for which they are paid
• Capital– Any human-made resource that is used to
create other goods and services
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Section 1: Scarcity & Factors of Production
• 2 Categories of capital
– Physical capital
– Human capital
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Section 1: Scarcity & Factors of Production
• 2 Categories of capital
1) Physical capital• Human-made goods that are used to produce
other goods or services
– Such as tools, machinery, and buildings
– Important factor of production because it can save time and money (for people and businesses)
» Typical benefits: extra time, more knowledge, more productivity
– Sometimes referred to as Capital Goods
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Section 1: Scarcity & Factors of Production
• 2 Categories of capital
2) Human capital• Skills and knowledge gained by a worker through
education and experience
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Section 1: Scarcity & Factors of Production
• Entrepreneurs– Ambitious leaders who combine land, labor, and
capital (factors of production) to create and market new goods and services
• Fuel economic growth• Take risks
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Chapter 1: What Is Economics?
• Section 1 Review
– Scarcity
– Factors of Production
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Chapter 1, Section 1 Review:
1. What is the difference between a shortage and scarcity?
(a) A shortage can be temporary or long-term, but scarcity always exists.
(b) A shortage results from rising prices; a scarcity results from falling prices.
(c) A shortage is a lack of all goods and services; a scarcity concerns a single item.
(d) There is no real difference between a shortage and a scarcity.
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Chapter 1, Section 1 Review:
2. Which of the following is an example of using physical capital to save time and money?
(a) hiring more workers to do a job
(b) building extra space in a factory to simplify production
(c) switching from oil to coal to make production cheaper
(d) lowering workers’ wages to increase profits
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Chapter 1: What Is Economics?
• Section 1 Review
– Scarcity
– Factors of Production
• Assignment– Chapter 1, Section 1 – Review
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Chapter 1: What Is Economics?
• Scarcity
• Factors of Production
• Decision Making
• Opportunity Cost
– Production Possibilities Curves
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Section 2: Opportunity Cost
• People make choices– How to spend time & money
• When we decide on one alternative, we gain one thing but lose something else
– Decisions involve trade-offs
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Section 2: Opportunity Cost
• Trade-offs– Alternatives that we sacrifice when we make
decisions
• Individual• Business• Society
– Government
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Section 2: Opportunity Cost
• Trade-offs
– Government
• Guns or butter– A phrase that refers to trade-offs that nations
face when choosing whether to produce more or less military or consumer goods
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Section 2: Opportunity Cost
• Opportunity cost– The most desirable alternative given up as the result
of a decision
• Your “2nd choice” is given up for your 1st choice
• Which would you choose?– Sleep late or wake up early to study for a test?– Sleep late or wake up early to eat breakfast before
school?– Sleep late or wake up early to leave for your dream
vacation?
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Section 2: Opportunity Cost
Benefits • Enjoy more sleep
• Have more energy during the day
• Better grade on test
• Teacher and parental approval
• Personal satisfaction
Decision • Sleep late • Wake up early to study for test
Opportunity cost
• Extra study time • Extra sleep time
Benefits forgone
• Better grade on test
• Teacher and parental approval
• Personal satisfaction
• Enjoy more sleep
• Have more energy during the day
Sleep late Wake up early to study
Alternatives
Decision-making Grid
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Section 2: Opportunity Cost
• Thinking at the margin– Deciding whether to do or use one additional unit of
some resource
• Deciding how much more or less to do
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Section 2: Opportunity Cost
Options
1st hour of extra study time
2nd hour of extra study time
3rd hour of extra study time
Benefit
Grade of C on test
Grade of B on test
Grade of B+ on test
Opportunity Cost
1 hour of sleep
2 hours ofsleep
3 hours of sleep
Thinking at the Margin
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Section 2: Opportunity Cost
• Cost and benefit at the margin
– Compare opportunity costs and benefits at the margin when making decisions
– What will you sacrifice? What will you gain?
– Once the opportunity cost outweighs the benefits, no more units should be added
– The decision-making process is sometimes called cost/benefit analysis
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Chapter 1: What Is Economics?
• Section 2 Review
– Decision Making
– Opportunity Cost
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Chapter 1, Section 2 Review:
1. Opportunity cost is
(a) any alternative we sacrifice when we make a decision.
(b) all of the alternatives we sacrifice when we make a decision.
(c) the most desirable alternative given up as a result of a decision.
(d) the least desirable alternative given up as a result of a decision.
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Chapter 1, Section 2 Review:
2. Economists use the phrase “guns or butter” to describe the fact that
(a) a person can spend extra money either on sports equipment or food.
(b) a person must decide whether to manufacture guns or butter.
(c) a nation must decide whether to produce more or less military or consumer goods.
(d) a government can buy unlimited military and civilian goods if it is rich enough.
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Chapter 1: What Is Economics?
• Section 2 Review
– Decision Making
– Opportunity Cost
• Assignments– Economic Cartoons, pg. 12 of Unit 1 book– Textbook pg. 11, Applying Economic
Concepts, #7 decision-making grid
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Chapter 1: What Is Economics?
• Scarcity
• Factors of Production
• Decision Making
• Opportunity Cost
– Production Possibilities Curves
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Section 3: Production Possibilities Curves
• Economists use tools to analyze opportunity costs and trade-offs
• Graphs easily help us to see how one value relates to another value
• Production possibilities curve– A graph that shows alternative ways to use an
economy’s resources
• Show efficiency, growth, and cost
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Section 3: Production Possibilities Curves
• Drawing a Production Possibilities Curve– Decide which goods or services to examine
• Horizontal and vertical axes– Plot points on a graph indicating possible
production choices– Draw a line connecting the plotted points
• Production possibilities frontier– The line on a production possibilities graph that
shows the maximum possible output
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Sh
oes
(m
illi
on
s o
f p
airs
)25
20
15
10
5
0252015105
Watermelons (millions of tons)
Production Possibilities Graph
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Section 3: Production Possibilities Curves
• Production possibilities frontier– The line on a production possibilities graph
that shows the maximum possible output
• An economy working at its most efficient production levels
• Any spot on the line represents a point where all resources are being used to produce a maximum combination of the two products
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Section 3: Production Possibilities Curves
• Production possibilities frontier– The line on a production possibilities graph that shows the
maximum possible output
• Any spot on the line represents a point where all resources are being used to produce a maximum combination of the two products
• Each point reflects a trade-off
– Because land, labor, and capital are scarce– Using the factors of production to make one
product means that fewer resources are left to make something else
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Section 3: Production Possibilities Curves
• Production possibility graphs:
Efficiency, Growth, and Cost
• Illustrate how efficiently an economy is working
• Indicate whether an economy has grown or shrunk
• Show the opportunity cost of a decision to produce more of one good or service
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Section 3: Production Possibilities Curves
• Production possibilities frontier– Represents an economy working at its most
efficient level of production
• Efficiency: Using resources in such a way as to maximize the production or output of goods and services
– An economy producing output levels on the production possibilities frontier is operating efficiently
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Section 3: Production Possibilities Curves
• Sometimes economies operate inefficiently
• When workers are laid off, fewer goods are produced
– This trade-off is represented by plotting a point inside the production possibilities frontier
• Underutilization
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Section 3: Production Possibilities Curves
• Underutilization– Using fewer resources than an economy is capable of
using
• Less than the maximum possible production
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Section 3: Production Possibilities Curves
• Production possibility graphs
(efficiency, growth, and cost)
• Reflect current production possibilities based on unchanging resources
– Quantity of resources constantly changes
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Section 3: Production Possibilities Curves
• Production possibility graphs
(efficiency, growth, and cost)
• If quantity or quality of available land, labor, or capital changes, then the curve moves
– Increase or decrease in workers– New inventions– Increase or decrease in land
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Section 3: Production Possibilities Curves
• Production possibility graphs
(efficiency, growth, and cost)
• When an economy grows or increases, the production possibilities curve “shifts to the right”
• When an economy shrinks or decreases, the production possibilities curve “shifts to the left”
• Current production possibilities frontier versus
future production possibilities frontier if amount of land, labor, or capital resources changes
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Section 3: Production Possibilities Curves
• Production possibility graphs
(efficiency, growth, and cost)
• Cost: The alternative that is given up because of a decision
– “Cost” always means “opportunity cost”
• Law of increasing costs– As factors of production switch from one item
to another, more and more resources are necessary to increase production of the second item
» Opportunity cost increases
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Section 3: Production Possibilities Curves
• Production possibility graphs:
Resources and technology
– A country’s resources include its land and natural resources, its work force, and its physical and human capital
– A country’s production possibilities depend on both the resources it has available and its level of technology
• Each production method uses different technology, or know-how, to create products
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Chapter 1: What Is Economics?
• Section 3 Review
– Production Possibilities Curves
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Chapter 1, Section 3 Review:
1. A production possibilities frontier shows
(a) farm goods and factory goods produced by an economy.
(b) the maximum possible output of an economy.
(c) the minimum possible output of an economy.
(d) underutilization of resources.
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Chapter 1, Section 3 Review:
2. An economy that is using its resources to produce the maximum number of goods and services is described as
(a) efficient.
(b) underutilized.
(c) growing.
(d) trading off.
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Chapter 1, Section 3 Review:
3. Which of the following happens to a production possibilities curve when economic growth occurs?
(a) The curve shifts to the left.
(b) The curve becomes a straight line.
(c) The curve shifts to the right.
(d) The curve does not change at all.
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Chapter 1: What Is Economics?
• Section 3 Review
– Production Possibilities Curves
• Assignments– Textbook pg. 21, Skills for Life, #’s 17-21– Vocabulary Practice crossword puzzle,
pg. 9 of Unit 1 book