Econ

25 July 2022
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62 test answers

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Total Revenue (TR)
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The amount a firm receives for selling its product = P*Q
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Total Cost (TC)
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The market value of all inputs used in production, including explicit and implicit costs. = implicit costs + explicit costs = variable cost (VC) + fixed cost (FC
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What is the objective of a firm?
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To maximize economic profit.
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Explicit Costs
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All input costs that involve spending money.
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Implicit Costs
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Input costs that do not involve spending money. Opportunity Costs.
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Production Function
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The relationship between the quantity of inputs used and the quantity of output produced.
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Marginal Product
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The increase in output produced by one additional unit of input.
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Economic Profit
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"true" measure of benefit to business = total revenue - total cost
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Accounting Profit
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implicit costs are excluded = total revenue - explicit costs
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Total Cost Curve
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relationship between quantity produced and total cost (implicit + explicit) of production
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As quantity _____ the Total Cost Curve gets steeper typically.
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increases. Because each additional unit of input costs the same but produces less output.
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Average Cost
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=TC/Q
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Marginal Cost
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increase in total cost of the last unit made =Change in TC / Change in Q
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Examples of Fixed Costs
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buildings, machinery, property tax, insurance
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Examples of Variable Costs
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raw materials, direct labor, energy
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Most fixed costs are only fixed in the ________.
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short run
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After fixed costs are spent, they are called ________.
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sunk costs
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The ATC in the short run must always be
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equal to or higher than in the long run.
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Production function flattens at
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high quantity.
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Marginal product of labor _____ at high quality.
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falls
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If MR > MC, what will raise profits?
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increasing production
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If MR < MC, what will raise profits?
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decreasing production
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If MR = MC, what will a change in production do?
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lower profits
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Price raise causes
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output increase.
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When does a firm maximize profit?
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When MC = MR
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Reasons firms experience loss
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-Decrease in demand: change in tastes, competition, technological obsolescence. -Input costs rise faster than product prices -Equipment wears out or is inefficient. -Key employees leave
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Firms should continue to operate at a loss in the short run if
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P > AVC
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Firms should exit if
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P < AVC
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Profit =
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= TR - TC = Q* ( P - ATC)
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Positive profit leads
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firms to expand possible entrants will enter
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Negative profit leads
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firms to exit possible entrants will not enter
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Firm cost involving monetary outlays, considered when calculating both accounting and economic profits
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Explicit Cost
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Firm cost that varies directly with the quantity of output produced
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Variable Cost
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Opportunity cost to a firm that does not involve monetary outlays
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Implicit Cost
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Increase in firm's total revenue from sale of an additional unit of output
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Marginal Revenue
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This curve passes through the minimum values of AVC and ATC
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Marginal Cost
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Reduction in total surplus created by monopoly profit maximization
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Dead-weight Loss
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Measure of the market share controlled by a small number of sellers
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Concentration Ratio
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Practice allowing a monopolist to take surplus from high-demand consumers
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Price Discrimination
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Market structure featuring strategic interaction among competing firms
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Oligopoly
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Market structure with free entry & exit and significant product variety
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Monopolistic Competition
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Free entry and exit means that the number of firms in the market adjusts until
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economic profits are driven to zero.
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In perfect competition, firms will choose an output level at which marginal cost:
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equals the market price.
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In an oligopoly, each firm knows that its profits:
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depend on how much output both it and its rival firms produce.
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If marginal cost is above average total cost, average total cost must be
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rising.
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What is a characteristic of monopolistic competition?
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d. each of the sellers offers a somewhat different product
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A feature shared by monopoly and monopolistic competition is that, in both of these market structures:
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firms face a downward sloping demand curve.
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If a perfectly competitive firm is earning profits in the short run: a. it should assume it will be able to earn those same profits in the long run; b. its average variable costs must be below the market price; c. its average total costs must be below the market price; d. it should prepare for entry from additional firms.
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b. its average variable costs must be below the market price; c. its average total costs must be below the market price; d. it should prepare for entry from additional firms.
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Which of the following would be most likely to have monopoly power? a. A national florist. b. An online bookstore. c. A local restaurant. d. A regional electrical power distribution firm.
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d. A regional electrical power distribution firm.
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In which of the following markets is strategic interaction among firms most likely? a. Markets in which firms own patents and copyrights. b. Markets in which many small firms compete with identical product. c. Markets in which many firms compete with differentiated products. d. Markets dominated by two or three large firms.
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d. Markets dominated by two or three large firms.
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A fixed cost is one that:
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is independent of the level of output produced.
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A concentration ratio:
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c. reflects the level of competition in a market;
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The legislation passed by Congress in 1890 that outlawed contracts, combinations, and conspiracies in restraint of trade was the:
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The Sherman Act
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Antitrust laws allow the government to:
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promote competition, prevent mergers, break up monopolies and cartels;
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HHI Index
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calculated by squaring the market share of each firm competing in a market, and then summing the resulting numbers. The HHI number can range from close to zero to 10,000.
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Economic profits are zero at the level of output at which
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price equals average total cost.
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Governments achieve a 'regulatory compromise' in controlling prices of natural monopoly firms by:
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forcing natural monopolies to set prices at their average total cost.
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In perfect competition, an individual firm's short-run supply curve is the same as
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its marginal cost curve above minimum AVC;
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Accounting profits are higher than economic profits because:
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accounting profits consider explicit, but not implicit costs;
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Profitable operation in the long run is possible only for:
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firms that are monopolies;
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Minimum average total cost (ATC) can be found on a graph by
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the point where marginal cost rises through the average total cost curve.
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The quantity at which min. AVC is found must be lower than.
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the quantity at which min. ATC is found