Microeconomics Exam 1

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Cost-benefit principle

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55 Terms

1

Cost-benefit principle

Costs and benefits are the incentives that shape decisions. Pursue only choices with benefits at least as large as cost

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2

Opportunity cost principle

True cost of something is the next best alternative that you have to give up

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3

Marginal principle

Decisions about quantities are best when made incrementally, so break ā€œhow many?ā€ questions into smaller marginal decisions

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4

Interdependence principle

Your best choice depends on other factors:

  1. Dependence between individual choices

  2. Dependence on othersā€™ choices

  3. Dependence between markets

  4. Dependence through time

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5

Marginal Cost

Extra cost from one extra unit of a good

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6

Scarcity

Limited resources

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7

Economic Surplus

Total benefits minus total cost

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8

Framing Effect

When a decision is affected by how a choice is described or framed

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9

Opportunity cost

The next best alternative you give up when making a decision

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10

Sunk cost

Cost already incurred that cannot be reversed and should be ignored

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11

Production Possibility Frontier (PPF)

Shows the different sets of outputs attainable with scarce resources. Used to help visualize the trade-offs of opportunity cost

<p>Shows the different sets of outputs attainable with scarce resources. Used to help visualize the trade-offs of opportunity cost</p>
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12

Willingness to pay

Conversion of non financial costs or benefits into their monetary equivalent

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13

Marginal benefit

Extra benefit from one extra unit of a good

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14

Rational Rule

If something is worth doing then keep doing it until marginal benefit = marginal cost

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15

Economics

The study of choices

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16

Complementary goods

Goods that work well together

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17

Congestion Effect

A good becomes less valuable when other people use it

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18

Decrease in demand

Shift of demand curve to the left

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19

Diminishing marginal benefit

Each additional item yields a smaller marginal benefit than the previous unit

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20

Ceteris Parabus

holding all other things constant

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21

Increase in demand

Shift of demand curve to the right

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22

Individual demand curve

Curve that plots the quantity of an item that an individual plans to purchase at each price

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23

Inferior goods

A good for which a higher income causes a decrease in demand

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24

Law of demand

Tendency for quantity demanded to be higher when the price is lower

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25

Market demand curve

Composed by adding the quantity demanded at each price in multiple individual demand curves, still looks similar.

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26

Movement along demand curve

As price increases, quantity demanded decreases

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Network Effect

Good which becomes more useful as other people use it.

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Normal good

A good for which a higher income causes an increase in demand

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29

Rational rule for buyers

Buy one more if the marginal benefit ā‰„ price

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30

Shift in demand curve

Occurs when changes to any of these occur: Income, Preferences, Price of related goods, Expectations, Network and congestion effects, Type and number of buyers

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31

Substitute goods

Goods that can replace each other

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32

Complements in production

Goods that are made together

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33

Decrease in Supply

Shift of supply curve to the left

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34

Diminishing marginal product

Marginal product declines as input increases

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35

Fixed costs

Costs that donā€™t vary based on changes in output produced

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36

Increase in supply

Shift of the supply curve to the right

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37

Individual Supply Curve

Graph plotting the quantity of an item that a business plans to sell at each price

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38

Law of Supply

The higher the price is, the higher the quantity supplied will be

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39

Marginal Product

Increase in output due to additional input

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40

Market Supply Curve

Total quantity supplied by the entire market at each price

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41

Movement along supply curve

As price increases, quantity supplied increases

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42

Perfect competition

Occurs when goods are identical and have many buyers and sellers that are each relatively small within the market

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43

Price taker

A seller who charges the prevailing price because they cannot affect it.

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44

Rational Rule for Sellers in Competitive Markets

Supply one more unit until price ā‰„ marginal cost

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45

Shift in Supply Curve

Occurs when changes to any of these occur: Input Prices, Productivity and technology, prices of related outputs, expectations, the type and number of sellers

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46

Substitutes in Production

Alternative uses of resources

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47

Variable costs

Costs that vary with the amount of output produced

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48

Equilibrium

A point at which there is no tendency for change, occurs when the market quantity demanded is equivalent to the quantity supplied

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49

Equilibrium Price

Price at which the market is in equilibirum

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50

Equilibrium Quantity

Quantity demanded and supplied when the market is in equilibrium

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51

Market

A setting that brings together buyers and sellers

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52

Market Economies

Each person makes their own production and spending decisions

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53

Planned Economies

Centralized decisions are made about what is produced, how, by whom, and who gets what.

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54

Shortage

When the market quantity demanded is greater than the quantity supplied

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55

Surplus

When the market quantity supplied is greater than the quantity demanded

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