MGEA02H3 Study Guide - Quiz Guide: Average Variable Cost, Envelope Theorem, Marginal Cost

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erinalligator902

31 Oct 2017

School

UTSC

Department

Economics for Management Studies

Course

MGEA02H3

Professor

Jack Parkinson

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MGEA02H3 Full Course Notes

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Document Summary

Mgea02 introduction to microeconomics: a mathematical approach. Topic 6 (week of oct 17) costs. Coverage: the typical shapes of a firm"s cost curves. Use of fixed and variable inputs determine short run costs, based on diminishing marginal product and rising marginal cost. The distinction between the short run and long run costs. Definition, description and explanation of total, average and marginal costs in the short run. The importance of marginal costs to decision- making. The envelope theorem and the relationship between short-run and long-run costs. The long run average cost curve (lac or lrac) as an envelope of the short run average cost curves. Economies of scale, diseconomies of scale, and minimum efficient scale. Recommended reading: second part of chapter 11 behind the supply curve: inputs and. Also, appendix 11a inverse relationships between productivity and. Do all the check your understanding questions within the parts of the text in the assigned readings.

Related Questions

36) A firm encountering economies of scale over some range of output will have a:

a) rising long-run average cost curve.

b) falling long-run average cost curve.

c) constant long-run average cost curve.

d) rising, then falling, then rising long-run average cost curve.

37) When a firm doubles its inputs and finds that its output has more than doubled, this is known as:

a) economies of scale.

b) constant returns to scale.

c) diseconomies of scale.

d) a violation of the law of diminishing returns.

38) The larger the diameter of a natural gas pipeline, the lower is the average total cost of transmitting 1,000 cubic feet of gas 1,000 miles. This is an example of:

a) economies of scale.

b) normative economies.

c) diminishing marginal returns.

d) an increasing marginal product of labor.

39) If all resources used in the production of a product are increased by 20 percent and output increases by 20 percent, then there must be:

a) economies of scale.

b) constant returns to scale.

c) diseconomies of scale.

d) increasing the average total costs.

40) Economies and diseconomies of scale explain why the:

a) short-run average fixed cost curve declines so long as output increases.

b) marginal cost curve must intersect the minimum point of the firm's average total cost curve.

c) long-run average total cost curve is typically U-shaped.

d) short-run average variable cost curve is U-shaped.

jadeshark411

constant costs

increasing returns to scale

constant returns to scale

isocost curve

decreasing returns to scale

isoquant

diseconomies of scale

long-run average cost

economies of scale

long-run marginal cost

economies of scope

marginal rate of technical substitution

expansion path

short-run expansion path

___A curve that displays all the various combinations of inputs that will produce a given amount of output.

___The rate at which one input is substituted for another along an isoquant.

___Line that shows all the possible combinations of inputs that can be purchased for a given total cost.

___A curve showing all of the cost-minimizing levels of input usage for various levels of output.

___When the usage of all inputs is increased by an equal proportionate amount, output ___increases by exactly the same proportion.

___When the usage of all inputs is increased by an equal proportionate amount, output increases by a larger proportionate amount.

___When the usage of all inputs is increased by an equal proportionate amount, output increases by a smaller proportionate amount.

___Cost per unit in the long run.

___The change in long-run total cost per unit change in output.

___When long-run average cost falls as output increases.

___When long-run average cost increases with increases in output.

___Long-run average and marginal costs are equal for all levels of output.

___The situation in which the joint cost of producing two goods is less than the sum of the separate costs of producing the two goods.

___Horizontal line showing the cost-minimizing input combinations for various output levels when capital is fixed in the short run.

aquamarineguinea-pig889

26. To the economist total cost includes

A. explicit and implicit costs.

B neither implicit nor explicit costs.

C. implicit, but not explicit, costs.

D. explicit, but not implicit, costs.

27. Accounting profits are typically

A. greater than economic profits because the former do not take explicit costs into account

B. equal to economic profits because accounting costs include all opportunity costs.

C. smaller than economic profits because the former do not take implicit costs into account.

D. greater than economic profits because the former do not take implicit costs into account.

28. Suppose that a business incurred implicit costs of $200,000 and explicit costs of $1 million in a specific year. If the firm sold 4,000 units of its output at $300 per unit, its accounting profits were

A. $100,000 and its economic profits were $0.

B. $200,000 and its economic profits were $0.

C. $100,000 and its economic profits were $100,000.

D. $0 and its economic loss was $200,000.

29. The basic difference between the short run and the long run is that

A. all costs are fixed in the short run, but all costs are variable in the long run.

B. the law of diminishing returns applies in the long run but not in the short run.

C. at least one resource is fixed in the short run, while all resources are variable in the long run.

D. economies of scale may be present in the short run but not in the long run.

30. The law of diminishing returns indicates that

A. as extra units of a variable resource are added to a fixed resource, marginal product will decline beyond some point.

B. because of economies and diseconomies of scale, a competitive firm's long-run average total cost curve will be U-shaped.

C. the demand for goods produced by purely competitive industries is downsloping.

D. beyond some point, the extra utility derived from additional units of a product will yield the consumer smaller and smaller extra amounts of satisfaction.

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MGEA02H3 Study Guide - Quiz Guide: Average Variable Cost, Envelope Theorem, Marginal Cost

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