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CJN 277 – Public Relations
Frank P. Irizarry !
Media Kit (due date: see syllabus) !
The purpose of this assignment is to help you gain a greater
understanding of
the organization, conceptualization, content and use of a media
kit/press kit.
You will be asked to conduct secondary research; primary
research is optional
but not necessary. !
What is a Media Kit? !
A media kit is a public communication tool used to generate
news stories about
an organization’s newsworthy initiative, campaign, special
event, major
announcement news conference, product launch or trade show.
It should
provide media with research, facts, perspectives and
organizational/product
historical context. !
What is in a Media Kit? !
Normally, a media kit will consist of a two pocket folder and
will include hard
copy news releases, media advisories, feature stories,
photographs, slides,
backgrounders, biographical sketches, fact sheets and position
papers. They
may also include video and audio content. Media kits should
incorporate visually
pleasing graphics and text to capture the media’s attention.
Media kits should be
prepared with the news media in mind. A media kit should have
a unified
theme, style and message to meet the goal of conveying a
unified message.
Maintaining consistency throughout the kit, such as using the
same fonts, colors
and graphic designs in all components, also enhances the
opportunity for media
coverage. !
What you must produce. !
The following are three options that you will choose from for
your media kit
assignment:
1. Special-event media kit – would be used to provide explicit
details,
logistical information and background material. Most of your
attention
would be focused on the event and less on the organization.
You would
choose a client and design a special-event media kit for an
upcoming
event for that client.
2. Promotional media kits – include brochures, advertisements,
critic quotes,
and third-party reviews. Sometimes, reprinted newspaper
articles would
be used. You would choose a client and promote an upcoming,
product,
good, service, event, person, place or thing related to that
client.
3. Crisis media kits – provide journalists with up-to-date facts,
background
data and relevant supplemental information. Would include
background
information on the organization, biographical information about
key
figures involved with the crisis, visual materials. You would
choose a
client undergoing a crisis situation and produce a crisis media
kit in an
appropriate fashion. !
All Media Kits Should Conform to the Layout Discussed on
Pages 70-73
of the PR Style Guide! !
All media kits must include the following:
1. News release
2. Fact sheet
3. Biographical information sheets – you must have two. At
least one
focused on a person in the organization and one focused on
someone
related to the event, crisis or event promotion.
4. Backgrounder – The backgrounder should be on the
organization itself in
which you provide a thorough history of your client, including
its
organizational culture, from its founding until today.
5. Position Paper or Feature Story - Position paper (which
would include
organizational stance on a relevant economic, political, social,
international, regulatory issues and/or policy) OR feature story
!
This assignment is due on the date assigned in the syllabus,
turned in during
class, in hard copy format. !!
Copyright © 2004 South-Western/
5
FIRM BEHAVIOR AND THE
ORGANIZATION OF INDUSTRY
10.psd
Copyright©2004 South-Western
13
The Costs of Production
Copyright © 2004 South-Western/
The Market Forces of Supply and DemandSupply and demand
are the two words that economists use most often.Supply and
demand are the forces that make market economies
work.Modern microeconomics is about supply, demand, and
market equilibrium.
Copyright © 2004 South-Western/
WHAT ARE COSTS?According to the Law of Supply:Firms are
willing to produce and sell a greater quantity of a good when
the price of the good is high.This results in a supply curve that
slopes upward.
Copyright © 2004 South-Western/
WHAT ARE COSTS?The Firm’s ObjectiveThe economic goal of
the firm is to maximize profits.
Copyright © 2004 South-Western/
Total Revenue, Total Cost, and Profit
Total RevenueThe amount a firm receives for the sale of its
output.
Total CostThe market value of the inputs a firm uses in
production.
Copyright © 2004 South-Western/
Total Revenue, Total Cost, and Profit
Profit is the firm’s total revenue minus its total cost.
Profit = Total revenue - Total cost
Copyright © 2004 South-Western/
Costs as Opportunity CostsA firm’s cost of production includes
all the opportunity costs of making its output of goods and
services.Explicit and Implicit CostsA firm’s cost of production
include explicit costs and implicit costs.
Explicit costs are input costs that require a direct outlay of
money by the firm.
Implicit costs are input costs that do not require an outlay of
money by the firm.
Copyright © 2004 South-Western/
Economic Profit versus Accounting Profit
Economists measure a firm’s economic profit as total revenue
minus total cost, including both explicit and implicit costs.
Accountants measure the accounting profit as the firm’s total
revenue minus only the firm’s explicit costs.
Copyright © 2004 South-Western/
Economic Profit versus Accounting ProfitWhen total revenue
exceeds both explicit and implicit costs, the firm earns
economic profit.Economic profit is smaller than accounting
profit.
Copyright © 2004 South-Western/
Figure 1 Economic versus Accountants
Copyright © 2004 South-Western
How an Economist
Views a Firm
How an Accountant
Views a Firm
Revenue
opportunity
Total
costs
Revenue
Economic
profit
Implicit
costs
Explicit
costs
Explicit
costs
Accounting
profit
Copyright © 2004 South-Western/
Table 1 A Production Function and Total Cost: Hungry Helen’s
Cookie Factory
Copyright©2004 South-Western
Copyright © 2004 South-Western/
PRODUCTION AND COSTSThe Production Function
The production function shows the relationship between
quantity of inputs used to make a good and the quantity of
output of that good.
Copyright © 2004 South-Western/
The Production Function Marginal Product
The marginal product of any input in the production process is
the increase in output that arises from an additional unit of that
input.
Copyright © 2004 South-Western/
The Production Function Diminishing Marginal Product
Diminishing marginal product is the property whereby the
marginal product of an input declines as the quantity of the
input increases. Example: As more and more workers are hired
at a firm, each additional worker contributes less and less to
production because the firm has a limited amount of equipment.
Copyright © 2004 South-Western/
Figure 2 Hungry Helen’s Production Function
Copyright © 2004 South-Western
Quantity of
Output
(cookies
per hour)
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
Number of Workers Hired
0
1
2
3
4
5
Production function
Copyright © 2004 South-Western/
The Production Function Diminishing Marginal Product The
slope of the production function measures the marginal product
of an input, such as a worker.When the marginal product
declines, the production function becomes flatter.
Copyright © 2004 South-Western/
From the Production Function to the Total-Cost CurveThe
relationship between the quantity a firm can produce and its
costs determines pricing decisions.The total-cost curve shows
this relationship graphically.
Copyright © 2004 South-Western/
Table 1 A Production Function and Total Cost: Hungry Helen’s
Cookie Factory
Copyright©2004 South-Western
Copyright © 2004 South-Western/
Figure 3 Hungry Helen’s Total-Cost Curve
Copyright © 2004 South-Western
Total
Cost
$80
70
60
50
40
30
20
10
Quantity
of Output
(cookies per hour)
0
10
20
30
150
130
110
90
70
50
40
140
120
100
80
60
Total-cost
curve
Copyright © 2004 South-Western/
THE VARIOUS MEASURES OF COST
Costs of production may be divided into fixed costs and
variable costs.
Copyright © 2004 South-Western/
Fixed and Variable CostsFixed costs are those costs that do not
vary with the quantity of output produced.Variable costs are
those costs that do vary with the quantity of output produced.
Copyright © 2004 South-Western/
Fixed and Variable CostsTotal CostsTotal Fixed Costs
(TFC)Total Variable Costs (TVC)Total Costs (TC) TC = TFC +
TVC
Copyright © 2004 South-Western/
Table 2 The Various Measures of Cost: Thirsty Thelma’s
Lemonade Stand
Copyright©2004 South-Western
Copyright © 2004 South-Western/
Fixed and Variable CostsAverage CostsAverage costs can be
determined by dividing the firm’s costs by the quantity of
output it produces. The average cost is the cost of each typical
unit of product.
Copyright © 2004 South-Western/
Fixed and Variable CostsAverage CostsAverage Fixed Costs
(AFC)Average Variable Costs (AVC)Average Total Costs
(ATC)ATC = AFC + AVC
Copyright © 2004 South-Western/
Average Costs
Copyright © 2004 South-Western/
Table 2 The Various Measures of Cost: Thirsty Thelma’s
Lemonade Stand
Copyright©2004 South-Western
Copyright © 2004 South-Western/
Fixed and Variable CostsMarginal Cost
Marginal cost (MC) measures the increase in total cost that
arises from an extra unit of production.Marginal cost helps
answer the following question:How much does it cost to
produce an additional unit of output?
Copyright © 2004 South-Western/
Marginal Cost
Copyright © 2004 South-Western/
Marginal Cost
Thirsty Thelma’s Lemonade Stand
Quantity
Total Cost
Marginal Cost
Quantity
Total Cost
Marginal Cost
0
$3.00
—
1
3.30
$0.30
6
$7.80
$1.30
2
3.80
0.50
7
9.30
1.50
3
4.50
0.70
8
11.00
1.70
4
5.40
0.90
9
12.90
1.90
5
6.50
1.10
10
15.00
2.10
Copyright © 2004 South-Western/
Figure 4 Thirsty Thelma’s Total-Cost Curves
Copyright © 2004 South-Western
Total Cost
$15.00
14.00
13.00
12.00
11.00
10.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
Quantity
of Output
(glasses of lemonade per hour)
0
1
4
3
2
7
6
5
9
8
10
Total-cost curve
Copyright © 2004 South-Western/
Figure 5 Thirsty Thelma’s Average-Cost and Marginal-Cost
Curves
Copyright © 2004 South-Western
Costs
$3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
Quantity
of Output
(glasses of lemonade per hour)
0
1
4
3
2
7
6
5
9
8
10
MC
ATC
AVC
AFC
Copyright © 2004 South-Western/
Cost Curves and Their ShapesMarginal cost rises with the
amount of output produced.This reflects the property of
diminishing marginal product.
Copyright © 2004 South-Western/
Figure 5 Thirsty Thelma’s Average-Cost and Marginal-Cost
Curves
Copyright © 2004 South-Western
Costs
$3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
Quantity
of Output
(glasses of lemonade per hour)
0
1
4
3
2
7
6
5
9
8
10
MC
Copyright © 2004 South-Western/
Cost Curves and Their ShapesThe average total-cost curve is U-
shaped.At very low levels of output average total cost is high
because fixed cost is spread over only a few units.Average total
cost declines as output increases.Average total cost starts rising
because average variable cost rises substantially.
Copyright © 2004 South-Western/
Cost Curves and Their Shapes
The bottom of the U-shaped ATC curve occurs at the quantity
that minimizes average total cost. This quantity is sometimes
called the efficient scale of the firm.
Copyright © 2004 South-Western/
Figure 5 Thirsty Thelma’s Average-Cost and Marginal-Cost
Curves
Copyright © 2004 South-Western
Costs
$3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
Quantity
of Output
(glasses of lemonade per hour)
0
1
4
3
2
7
6
5
9
8
10
ATC
Copyright © 2004 South-Western/
Cost Curves and Their Shapes Relationship between Marginal
Cost and Average Total CostWhenever marginal cost is less
than average total cost, average total cost is falling.Whenever
marginal cost is greater than average total cost, average total
cost is rising.
Copyright © 2004 South-Western/
Cost Curves and Their Shapes Relationship Between Marginal
Cost and Average Total CostThe marginal-cost curve crosses
the average-total-cost curve at the efficient scale. Efficient
scale is the quantity that minimizes average total cost.
Copyright © 2004 South-Western/
Figure 5 Thirsty Thelma’s Average-Cost and Marginal-Cost
Curves
Copyright © 2004 South-Western
Costs
$3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
Quantity
of Output
(glasses of lemonade per hour)
0
1
4
3
2
7
6
5
9
8
10
ATC
MC
Copyright © 2004 South-Western/
Typical Cost Curves
It is now time to examine the relationships that exist between
the different measures of cost.
Copyright © 2004 South-Western/
Big Bob’s Cost Curves
Copyright © 2004 South-Western/
Figure 6 Big Bob’s Cost Curves
Copyright © 2004 South-Western
(a) Total-Cost Curve
$18.00
16.00
14.00
12.00
10.00
8.00
6.00
4.00
Quantity of Output (bagels per hour)
TC
4
2
6
8
14
12
10
2.00
Total
Cost
0
Copyright © 2004 South-Western/
Figure 6 Big Bob’s Cost Curves
Copyright © 2004 South-Western
(b) Marginal- and Average-Cost Curves
Quantity of Output (bagels per hour)
Costs
$3.00
2.50
2.00
1.50
1.00
0.50
0
4
2
6
8
14
12
10
MC
ATC
AVC
AFC
Copyright © 2004 South-Western/
Typical Cost Curves Three Important Properties of Cost
CurvesMarginal cost eventually rises with the quantity of
output.The average-total-cost curve is U-shaped.The marginal-
cost curve crosses the average-total-cost curve at the minimum
of average total cost.
Copyright © 2004 South-Western/
COSTS IN THE SHORT RUN AND IN THE LONG RUNFor
many firms, the division of total costs between fixed and
variable costs depends on the time horizon being considered.In
the short run, some costs are fixed.In the long run, fixed costs
become variable costs.
Copyright © 2004 South-Western/
COSTS IN THE SHORT RUN AND IN THE LONG
RUNBecause many costs are fixed in the short run but variable
in the long run, a firm’s long-run cost curves differ from its
short-run cost curves.
Copyright © 2004 South-Western/
Figure 7 Average Total Cost in the Short and Long Run
Copyright © 2004 South-Western
Quantity of
Cars per Day
0
Average
Total
Cost
1,200
$12,000
ATC
in short
run with
small factory
ATC
in short
run with
medium factory
ATC
in short
run with
large factory
ATC
in long run
Copyright © 2004 South-Western/
Economies and Diseconomies of Scale
Economies of scale refer to the property whereby long-run
average total cost falls as the quantity of output increases.
Diseconomies of scale refer to the property whereby long-run
average total cost rises as the quantity of output increases.
Constant returns to scale refers to the property whereby long-
run average total cost stays the same as the quantity of output
increases
Copyright © 2004 South-Western/
Figure 7 Average Total Cost in the Short and Long Run
Copyright © 2004 South-Western
Quantity of
Cars per Day
0
Average
Total
Cost
1,200
$12,000
1,000
10,000
Economies
of
scale
ATC
in short
run with
small factory
ATC
in short
run with
medium factory
ATC
in short
run with
large factory
ATC
in long run
Diseconomies
of
scale
Constant
returns to
scale
Copyright © 2004 South-Western/
SummaryThe goal of firms is to maximize profit, which equals
total revenue minus total cost. When analyzing a firm’s
behavior, it is important to include all the opportunity costs of
production.Some opportunity costs are explicit while other
opportunity costs are implicit.
Copyright © 2004 South-Western/
SummaryA firm’s costs reflect its production process.A typical
firm’s production function gets flatter as the quantity of input
increases, displaying the property of diminishing marginal
product.A firm’s total costs are divided between fixed and
variable costs. Fixed costs do not change when the firm alters
the quantity of output produced; variable costs do change as the
firm alters quantity of output produced.
Copyright © 2004 South-Western/
SummaryAverage total cost is total cost divided by the quantity
of output.Marginal cost is the amount by which total cost would
rise if output were increased by one unit.The marginal cost
always rises with the quantity of output.Average cost first falls
as output increases and then rises.
Copyright © 2004 South-Western/
SummaryThe average-total-cost curve is U-shaped.The
marginal-cost curve always crosses the average-total-cost curve
at the minimum of ATC.A firm’s costs often depend on the time
horizon being considered.In particular, many costs are fixed in
the short run but variable in the long run.
AFC
FC
Q
=
=
Fixed cost
Quantity
AVC
VC
Q
=
=
Variable c
ost
Quantity
ATC
TC
Q
=
=
Total cost
Quantity
MC
TC
Q
=
=
(
change in
total cost
)
(change in
quantity)
D
D
Quantity
Total
Cost
Marginal
Cost
Quantity
Total
Cost
Marginal
Cost
0
$3.00
—
1
3.30
$0.30
6
$7.80
$1.30
2
3.80
0.50
7
9.30
1.50
3
4.50
0.70
8
11.00
1.70
4
5.40
0.90
9
12.90
1.90
5
6.50
1.10
10
15.00
2.10
Assignment:
1. Give a brief summary of economic costs.
2. Suppose a firm operating at the minimum point of its short-
run average total cost curve, so that marginal cost equals
average total cost. Under what circumstances would it choose to
alter the size of its plant? Explain.
3. In the short-run, why might a firm still operate even when
there is a loss?
4. Suppose a firm is producing 1,000 units of output (Q). Its
average fixed costs are $50. Its average variable costs are $25.
What is the total cost (TC) of producing 1,000 units of output
(Q)? If the price (P) of the good is $100 what is the total
revenue? What is the total profit?
Expectations:
Use concepts from the modular background readings as well as
any good-quality resources you can find. Be sure to cite all
sources within the text and provide a reference list at the end of
the paper.
Length: 4–5 pages double-spaced and typed
The following items will be assessed in particular:
1. Your ability to understand the relationship between costs and
production.
2. Some in-text references to the modular background material
(APA formatting required) with Website information.
http://www.inflateyourmind.com/pdfs/microeconomics.pdf
The essay should address each element of the assignment.
Remember to support your answers with solid references
including the case readings.

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CJN 277 – Public Relations Frank P. Irizarry !Media Kit (d.docx

  • 1. CJN 277 – Public Relations Frank P. Irizarry ! Media Kit (due date: see syllabus) ! The purpose of this assignment is to help you gain a greater understanding of the organization, conceptualization, content and use of a media kit/press kit. You will be asked to conduct secondary research; primary research is optional but not necessary. ! What is a Media Kit? ! A media kit is a public communication tool used to generate news stories about an organization’s newsworthy initiative, campaign, special event, major announcement news conference, product launch or trade show. It should provide media with research, facts, perspectives and organizational/product historical context. ! What is in a Media Kit? ! Normally, a media kit will consist of a two pocket folder and will include hard copy news releases, media advisories, feature stories, photographs, slides, backgrounders, biographical sketches, fact sheets and position papers. They may also include video and audio content. Media kits should incorporate visually pleasing graphics and text to capture the media’s attention. Media kits should be prepared with the news media in mind. A media kit should have
  • 2. a unified theme, style and message to meet the goal of conveying a unified message. Maintaining consistency throughout the kit, such as using the same fonts, colors and graphic designs in all components, also enhances the opportunity for media coverage. ! What you must produce. ! The following are three options that you will choose from for your media kit assignment: 1. Special-event media kit – would be used to provide explicit details, logistical information and background material. Most of your attention would be focused on the event and less on the organization. You would choose a client and design a special-event media kit for an upcoming event for that client. 2. Promotional media kits – include brochures, advertisements, critic quotes, and third-party reviews. Sometimes, reprinted newspaper articles would be used. You would choose a client and promote an upcoming, product, good, service, event, person, place or thing related to that client. 3. Crisis media kits – provide journalists with up-to-date facts, background data and relevant supplemental information. Would include background
  • 3. information on the organization, biographical information about key figures involved with the crisis, visual materials. You would choose a client undergoing a crisis situation and produce a crisis media kit in an appropriate fashion. ! All Media Kits Should Conform to the Layout Discussed on Pages 70-73 of the PR Style Guide! ! All media kits must include the following: 1. News release 2. Fact sheet 3. Biographical information sheets – you must have two. At least one focused on a person in the organization and one focused on someone related to the event, crisis or event promotion. 4. Backgrounder – The backgrounder should be on the organization itself in which you provide a thorough history of your client, including its organizational culture, from its founding until today. 5. Position Paper or Feature Story - Position paper (which would include organizational stance on a relevant economic, political, social, international, regulatory issues and/or policy) OR feature story !
  • 4. This assignment is due on the date assigned in the syllabus, turned in during class, in hard copy format. !! Copyright © 2004 South-Western/ 5 FIRM BEHAVIOR AND THE ORGANIZATION OF INDUSTRY 10.psd Copyright©2004 South-Western 13 The Costs of Production Copyright © 2004 South-Western/ The Market Forces of Supply and DemandSupply and demand are the two words that economists use most often.Supply and demand are the forces that make market economies work.Modern microeconomics is about supply, demand, and market equilibrium.
  • 5. Copyright © 2004 South-Western/ WHAT ARE COSTS?According to the Law of Supply:Firms are willing to produce and sell a greater quantity of a good when the price of the good is high.This results in a supply curve that slopes upward. Copyright © 2004 South-Western/ WHAT ARE COSTS?The Firm’s ObjectiveThe economic goal of the firm is to maximize profits. Copyright © 2004 South-Western/ Total Revenue, Total Cost, and Profit Total RevenueThe amount a firm receives for the sale of its output. Total CostThe market value of the inputs a firm uses in production. Copyright © 2004 South-Western/ Total Revenue, Total Cost, and Profit Profit is the firm’s total revenue minus its total cost. Profit = Total revenue - Total cost Copyright © 2004 South-Western/ Costs as Opportunity CostsA firm’s cost of production includes all the opportunity costs of making its output of goods and
  • 6. services.Explicit and Implicit CostsA firm’s cost of production include explicit costs and implicit costs. Explicit costs are input costs that require a direct outlay of money by the firm. Implicit costs are input costs that do not require an outlay of money by the firm. Copyright © 2004 South-Western/ Economic Profit versus Accounting Profit Economists measure a firm’s economic profit as total revenue minus total cost, including both explicit and implicit costs. Accountants measure the accounting profit as the firm’s total revenue minus only the firm’s explicit costs. Copyright © 2004 South-Western/ Economic Profit versus Accounting ProfitWhen total revenue exceeds both explicit and implicit costs, the firm earns economic profit.Economic profit is smaller than accounting profit. Copyright © 2004 South-Western/ Figure 1 Economic versus Accountants Copyright © 2004 South-Western How an Economist Views a Firm How an Accountant Views a Firm Revenue
  • 7. opportunity Total costs Revenue Economic profit Implicit costs Explicit costs Explicit costs Accounting profit Copyright © 2004 South-Western/ Table 1 A Production Function and Total Cost: Hungry Helen’s Cookie Factory Copyright©2004 South-Western Copyright © 2004 South-Western/ PRODUCTION AND COSTSThe Production Function The production function shows the relationship between quantity of inputs used to make a good and the quantity of output of that good.
  • 8. Copyright © 2004 South-Western/ The Production Function Marginal Product The marginal product of any input in the production process is the increase in output that arises from an additional unit of that input. Copyright © 2004 South-Western/ The Production Function Diminishing Marginal Product Diminishing marginal product is the property whereby the marginal product of an input declines as the quantity of the input increases. Example: As more and more workers are hired at a firm, each additional worker contributes less and less to production because the firm has a limited amount of equipment. Copyright © 2004 South-Western/ Figure 2 Hungry Helen’s Production Function Copyright © 2004 South-Western Quantity of
  • 9. Output (cookies per hour) 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 Number of Workers Hired 0 1 2 3 4 5 Production function Copyright © 2004 South-Western/
  • 10. The Production Function Diminishing Marginal Product The slope of the production function measures the marginal product of an input, such as a worker.When the marginal product declines, the production function becomes flatter. Copyright © 2004 South-Western/ From the Production Function to the Total-Cost CurveThe relationship between the quantity a firm can produce and its costs determines pricing decisions.The total-cost curve shows this relationship graphically. Copyright © 2004 South-Western/ Table 1 A Production Function and Total Cost: Hungry Helen’s Cookie Factory Copyright©2004 South-Western Copyright © 2004 South-Western/ Figure 3 Hungry Helen’s Total-Cost Curve Copyright © 2004 South-Western
  • 11. Total Cost $80 70 60 50 40 30 20 10 Quantity of Output (cookies per hour) 0 10 20 30 150 130 110 90 70 50 40 140 120 100 80 60
  • 12. Total-cost curve Copyright © 2004 South-Western/ THE VARIOUS MEASURES OF COST Costs of production may be divided into fixed costs and variable costs. Copyright © 2004 South-Western/ Fixed and Variable CostsFixed costs are those costs that do not vary with the quantity of output produced.Variable costs are those costs that do vary with the quantity of output produced. Copyright © 2004 South-Western/ Fixed and Variable CostsTotal CostsTotal Fixed Costs (TFC)Total Variable Costs (TVC)Total Costs (TC) TC = TFC + TVC Copyright © 2004 South-Western/ Table 2 The Various Measures of Cost: Thirsty Thelma’s Lemonade Stand Copyright©2004 South-Western Copyright © 2004 South-Western/ Fixed and Variable CostsAverage CostsAverage costs can be determined by dividing the firm’s costs by the quantity of
  • 13. output it produces. The average cost is the cost of each typical unit of product. Copyright © 2004 South-Western/ Fixed and Variable CostsAverage CostsAverage Fixed Costs (AFC)Average Variable Costs (AVC)Average Total Costs (ATC)ATC = AFC + AVC Copyright © 2004 South-Western/ Average Costs Copyright © 2004 South-Western/ Table 2 The Various Measures of Cost: Thirsty Thelma’s Lemonade Stand Copyright©2004 South-Western Copyright © 2004 South-Western/ Fixed and Variable CostsMarginal Cost Marginal cost (MC) measures the increase in total cost that arises from an extra unit of production.Marginal cost helps answer the following question:How much does it cost to produce an additional unit of output? Copyright © 2004 South-Western/ Marginal Cost
  • 14. Copyright © 2004 South-Western/ Marginal Cost Thirsty Thelma’s Lemonade Stand Quantity Total Cost Marginal Cost Quantity Total Cost Marginal Cost 0 $3.00 — 1 3.30 $0.30 6 $7.80 $1.30 2 3.80 0.50 7 9.30 1.50
  • 15. 3 4.50 0.70 8 11.00 1.70 4 5.40 0.90 9 12.90 1.90 5 6.50 1.10 10 15.00 2.10 Copyright © 2004 South-Western/ Figure 4 Thirsty Thelma’s Total-Cost Curves Copyright © 2004 South-Western
  • 17. Copyright © 2004 South-Western/ Figure 5 Thirsty Thelma’s Average-Cost and Marginal-Cost Curves Copyright © 2004 South-Western Costs $3.50 3.25 3.00 2.75 2.50 2.25 2.00
  • 18. 1.75 1.50 1.25 1.00 0.75 0.50 0.25 Quantity of Output (glasses of lemonade per hour) 0 1 4 3 2 7 6 5 9 8 10 MC ATC AVC AFC
  • 19.
  • 20. Copyright © 2004 South-Western/ Cost Curves and Their ShapesMarginal cost rises with the amount of output produced.This reflects the property of diminishing marginal product.
  • 21. Copyright © 2004 South-Western/ Figure 5 Thirsty Thelma’s Average-Cost and Marginal-Cost Curves Copyright © 2004 South-Western Costs $3.50 3.25 3.00 2.75 2.50 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 Quantity of Output
  • 22. (glasses of lemonade per hour) 0 1 4 3 2 7 6 5 9 8 10 MC Copyright © 2004 South-Western/
  • 23. Cost Curves and Their ShapesThe average total-cost curve is U- shaped.At very low levels of output average total cost is high because fixed cost is spread over only a few units.Average total cost declines as output increases.Average total cost starts rising because average variable cost rises substantially. Copyright © 2004 South-Western/ Cost Curves and Their Shapes The bottom of the U-shaped ATC curve occurs at the quantity that minimizes average total cost. This quantity is sometimes called the efficient scale of the firm. Copyright © 2004 South-Western/ Figure 5 Thirsty Thelma’s Average-Cost and Marginal-Cost Curves Copyright © 2004 South-Western Costs $3.50 3.25 3.00
  • 25. Copyright © 2004 South-Western/ Cost Curves and Their Shapes Relationship between Marginal Cost and Average Total CostWhenever marginal cost is less than average total cost, average total cost is falling.Whenever marginal cost is greater than average total cost, average total cost is rising. Copyright © 2004 South-Western/ Cost Curves and Their Shapes Relationship Between Marginal Cost and Average Total CostThe marginal-cost curve crosses the average-total-cost curve at the efficient scale. Efficient scale is the quantity that minimizes average total cost. Copyright © 2004 South-Western/ Figure 5 Thirsty Thelma’s Average-Cost and Marginal-Cost Curves Copyright © 2004 South-Western
  • 28. Copyright © 2004 South-Western/ Typical Cost Curves It is now time to examine the relationships that exist between the different measures of cost. Copyright © 2004 South-Western/ Big Bob’s Cost Curves Copyright © 2004 South-Western/ Figure 6 Big Bob’s Cost Curves Copyright © 2004 South-Western
  • 29. (a) Total-Cost Curve $18.00 16.00 14.00 12.00 10.00 8.00 6.00 4.00 Quantity of Output (bagels per hour) TC 4 2 6 8 14 12 10 2.00 Total Cost 0
  • 30. Copyright © 2004 South-Western/ Figure 6 Big Bob’s Cost Curves Copyright © 2004 South-Western (b) Marginal- and Average-Cost Curves Quantity of Output (bagels per hour) Costs $3.00
  • 32.
  • 33.
  • 34. Copyright © 2004 South-Western/ Typical Cost Curves Three Important Properties of Cost CurvesMarginal cost eventually rises with the quantity of output.The average-total-cost curve is U-shaped.The marginal- cost curve crosses the average-total-cost curve at the minimum of average total cost. Copyright © 2004 South-Western/ COSTS IN THE SHORT RUN AND IN THE LONG RUNFor many firms, the division of total costs between fixed and variable costs depends on the time horizon being considered.In the short run, some costs are fixed.In the long run, fixed costs become variable costs.
  • 35. Copyright © 2004 South-Western/ COSTS IN THE SHORT RUN AND IN THE LONG RUNBecause many costs are fixed in the short run but variable in the long run, a firm’s long-run cost curves differ from its short-run cost curves. Copyright © 2004 South-Western/ Figure 7 Average Total Cost in the Short and Long Run Copyright © 2004 South-Western Quantity of Cars per Day 0 Average Total Cost 1,200 $12,000 ATC
  • 36. in short run with small factory ATC in short run with medium factory ATC in short run with large factory ATC in long run Copyright © 2004 South-Western/ Economies and Diseconomies of Scale Economies of scale refer to the property whereby long-run average total cost falls as the quantity of output increases. Diseconomies of scale refer to the property whereby long-run average total cost rises as the quantity of output increases. Constant returns to scale refers to the property whereby long- run average total cost stays the same as the quantity of output increases Copyright © 2004 South-Western/ Figure 7 Average Total Cost in the Short and Long Run
  • 37. Copyright © 2004 South-Western Quantity of Cars per Day 0 Average Total Cost 1,200 $12,000 1,000 10,000 Economies of scale
  • 38. ATC in short run with small factory ATC in short run with medium factory ATC in short run with large factory ATC in long run Diseconomies of scale Constant returns to scale Copyright © 2004 South-Western/ SummaryThe goal of firms is to maximize profit, which equals total revenue minus total cost. When analyzing a firm’s behavior, it is important to include all the opportunity costs of
  • 39. production.Some opportunity costs are explicit while other opportunity costs are implicit. Copyright © 2004 South-Western/ SummaryA firm’s costs reflect its production process.A typical firm’s production function gets flatter as the quantity of input increases, displaying the property of diminishing marginal product.A firm’s total costs are divided between fixed and variable costs. Fixed costs do not change when the firm alters the quantity of output produced; variable costs do change as the firm alters quantity of output produced. Copyright © 2004 South-Western/ SummaryAverage total cost is total cost divided by the quantity of output.Marginal cost is the amount by which total cost would rise if output were increased by one unit.The marginal cost always rises with the quantity of output.Average cost first falls as output increases and then rises. Copyright © 2004 South-Western/ SummaryThe average-total-cost curve is U-shaped.The marginal-cost curve always crosses the average-total-cost curve at the minimum of ATC.A firm’s costs often depend on the time horizon being considered.In particular, many costs are fixed in the short run but variable in the long run. AFC FC Q = =
  • 40. Fixed cost Quantity AVC VC Q = = Variable c ost Quantity ATC TC Q = = Total cost Quantity MC TC Q = = ( change in total cost ) (change in quantity) D D Quantity Total Cost Marginal Cost Quantity
  • 42. 2.10 Assignment: 1. Give a brief summary of economic costs. 2. Suppose a firm operating at the minimum point of its short- run average total cost curve, so that marginal cost equals average total cost. Under what circumstances would it choose to alter the size of its plant? Explain. 3. In the short-run, why might a firm still operate even when there is a loss? 4. Suppose a firm is producing 1,000 units of output (Q). Its average fixed costs are $50. Its average variable costs are $25. What is the total cost (TC) of producing 1,000 units of output (Q)? If the price (P) of the good is $100 what is the total revenue? What is the total profit? Expectations: Use concepts from the modular background readings as well as any good-quality resources you can find. Be sure to cite all sources within the text and provide a reference list at the end of the paper. Length: 4–5 pages double-spaced and typed The following items will be assessed in particular: 1. Your ability to understand the relationship between costs and production. 2. Some in-text references to the modular background material
  • 43. (APA formatting required) with Website information. http://www.inflateyourmind.com/pdfs/microeconomics.pdf The essay should address each element of the assignment. Remember to support your answers with solid references including the case readings.