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ECON 101
Test 2 Elasticity/Consumer/Choices/Costs
Term | Definition |
---|---|
elastic demand | when the elasticity of demand is greater than one, indicating a high responsiveness of quantity demanded or supplied to changes in price |
elastic supply | when the elasticity of either supply is greater than one, indicating a high responsiveness of quantity demanded or supplied to changes in price |
elasticity | an economics concept that measures responsiveness of one variable to changes in another variable |
inelastic demand | when the elasticity of demand is less than one, indicating that a 1 percent increase in price paid by the consumer leads to less than a 1 percent change in purchases (and vice versa); this indicates a low responsiveness by consumers to price changes |
inelastic supply | when the elasticity of supply is < 1, indicating that a 1% increase in price paid to the firm will result in < 1% increase in production by the firm; this indicates a low responsiveness of the firm to price increases (and vice versa if prices drop) |
price elasticity | the relationship between the percent change in price resulting in a corresponding percentage change in the quantity demanded or supplied |
price elasticity of demand | percentage change in the quantity demanded of a good or service divided the percentage change in price |
price elasticity of supply | percentage change in the quantity supplied divided by the percentage change in price |
unitary elasticity | when the calculated elasticity is equal to one indicating that a change in the price of the good or service results in a proportional change in the quantity demanded or supplied |
constant unitary elasticity | when a given percent price change in price leads to an equal percentage change in quantity demanded or supplied |
infinite elasticity | the extremely elastic situation of demand or supply where quantity changes by an infinite amount in response to any change in price; horizontal in appearance |
perfect elasticity | see infinite elasticity |
zero inelasticity | the highly inelastic case of demand or supply in which a percentage change in price, no matter how large, results in zero change in the quantity; vertical in appearance |
perfect inelasticity | see zero elasticity |
tax incidence | manner in which the tax burden is divided between buyers and sellers |
cross price elasticity of demand | the percentage change in the quantity of good A that is demanded as a result of a percentage change in good B |
elasticity of savings | the percentage change in the quantity of savings divided by the percentage change in interest rates |
wage elasticity of labor supply | the percentage change in hours worked divided by the percentage change in wages |
budget constraint line | shows the possible combinations of two goods that are affordable given a consumer’s limited income |
consumer equilibrium | when the ratio of the prices of goods is equal to the ratio of the marginal utilities (point at which the consumer can get the most satisfaction) |
diminishing marginal utility | the common pattern that each marginal unit of a good consumed provides less of an addition to utility than the previous unit |
marginal utility | the additional utility provided by one additional unit of consumption |
marginal utility per dollar | the additional satisfaction gained from purchasing a good given the price of the product; MU/Price |
total utility | satisfaction derived from consumer choices |
income effect | a higher price means that, in effect, the buying power of income has been reduced, even though actual income has not changed; always happens simultaneously with a substitution effect |
substitution effect | when a price changes, consumers have an incentive to consume less of the good with a relatively higher price and more of the good with a relatively lower price; always happens simultaneously with an income effect |
backward bending supply curve for labor | the situation when high wage people can earn so much that they respond to a still higher wage by working fewer hours |
behavioral economics | a branch of economics that seeks to enrich the understanding of decision |
Fungible | the idea that units of a good, such as dollars, ounces of gold, or barrels of oil are capable of mutual substitution with each other and carry equal value to the individual. |
accounting profit | total revenues minus explicit costs, including depreciation |
economic profit | total revenues minus total costs (explicit plus implicit costs) |
explicit costs | out-of-pocket costs for a firm, for example, payments for wages and salaries, rent, or materials |
firm | an organization that combines inputs of labor, capital, land, and raw or finished component materials to produce outputs. |
implicit costs | opportunity cost of resources already owned by the firm and used in business, for example, expanding a factory onto land already owned |
private enterprise | the ownership of businesses by private individuals |
production | the process of combining inputs to produce outputs, ideally of a value greater than the value of the inputs |
revenue | income from selling a firm’s product; defined as price times quantity sold |
average profit | profit divided by the quantity of output produced; profit margin |
average total cost | total cost divided by the quantity of output |
average variable cost | variable cost divided by the quantity of output |
fixed cost | expenditure that must be made before production starts and that does not change regardless of the level of production |
marginal cost | the additional cost of producing one more unit |
total cost | the sum of fixed and variable costs of production |
variable cost | cost of production that increases with the quantity produced |
constant returns to scale | expanding all inputs proportionately does not change the average cost of production |
diseconomies of scale | the long run average cost of producing each individual unit increases as total output increases |
long run average cost (LRAC) curve | shows the lowest possible average cost of production, allowing all the inputs to production to vary so that the firm is choosing its production technology |
production technologies | alternative methods of combining inputs to produce output |
short run average cost (SRAC) curve | the average total cost curve in the short term; shows the total of the average fixed costs and the average variable costs |