unit 2 econ final review

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12th grade ap microeconomics

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46 Terms

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demand

different quantities of goods that consumers are willing and able to buy at different prices

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law of demand

- inverse relationship between price and quantity demanded
- occurs bc of substitution effect, income effect, and law of diminishing marginal utility

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substitution effect

product price increases = consumer buys more of substitute product and less of that product (and vice versa)

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income effect

produce price decreases = consumers buy more

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law of diminishing marginal utility

consuming more units = additional satisfaction from each additional unit eventually decreases

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utility

satisfaction

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market demand

summation of the consumers' demand

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shifters of demand

anything but price

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substitutes

Px↑ = Dy↑ (direct relationship)

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complements

Px↑ = Dy↓ (inverse relationship)

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normal

income↑ = D↑ (direct relationship)
- goods you buy when you have money

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inferior

income↑ = D↓ (inverse relationship)
- goods you buy when your poor

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substitutes

- goods used in place of another
- ex: pepsi and coke

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complements

- two goods that are bought and used together
- ex: skis and ski boots

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supply

different quantities of a good that sellers are willing and able to sell (produce) at different prices

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law of supply

direct/positive relationship between price and quantity supplied

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shifters of supply

anything but price

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subsidies

- gov payment that supports market
- supply of a good increases

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consumer surplus

- difference between what you are willing to pay and what you actually pay
- CS = buyer's maximum - price

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producer's surplus

- difference between the price the seller received and how much they were willing to sell it for
- PS = price - seller's minimum

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unit elastic

consumer surplus and producer surplus is balanced

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surplus

producers lower prices

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shortage

producers raise prices

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double shifts

either price or quantity will be indeterminate

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elasticity of demand

- measurement of consumers responsiveness to a change in price
- helps firms determine prices and sales
- helps gov decide how to tax

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inelastic demand

- not sensitive to price change
- ppl will continue to buy it regardless of price
- elasticity coefficient <1

<p>- not sensitive to price change<br>- ppl will continue to buy it regardless of price<br>- elasticity coefficient &lt;1</p>
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elastic demand

- sensitive to price change
- price change = quantity demanded changes a lot

<p>- sensitive to price change<br>- price change = quantity demanded changes a lot</p>
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elastic demand

P↑ = TR↓ (inverse relationship)

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inelastic demand

P↑ = TR↑ (direct relationship)

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unit elastic

P↑ = TR—

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elastic

positive marginal revenue

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total revenue

price x quantity

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elastic demand

P↑ = TR↓ (inverse relationship)
- total revenue test

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inelastic demand

P↑ = TR↑ (direct relationship)
- total revenue test

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price elasticity of supply

how sensitive producers are to a change in price

<p>how sensitive producers are to a change in price</p>
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cross price elasticity of demand

- how sensitive a product is to a change in price of another good
- shows if goods are substitutes or complements

<p>- how sensitive a product is to a change in price of another good<br>- shows if goods are substitutes or complements</p>
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complements

coefficient = negative (shows inverse relationship)
- cross price elasticity

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substitutes

coefficient = positive (shows direct relationship)
- cross price elasticity

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income elasticity of demand

- how sensitive a product is to a change in income
- shows if goods are normal or inferior

<p>- how sensitive a product is to a change in income<br>- shows if goods are normal or inferior</p>
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inferior

coefficient = negative (shows inverse relationship)
- income elasticity

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normal

coefficient = positive (shows direct relationship)
- income elasticity

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price ceiling

maximum legal price a seller can charge

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price floor

minimum legal price a seller can sell

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excise tax

per unit tax on producers

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MB = MC

when to stop consuming

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utility maximization

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