Economics Chapter 7 - Cost Concepts
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Questions and Answers

What is the total fixed cost (TFC) when the output is 3 units?

  • 80 (correct)
  • 200
  • 120
  • 26.67
  • What is the marginal cost (MC) of producing the 4th unit of output?

  • 50
  • 70 (correct)
  • 40
  • 100
  • Which of the following statements is true about the relationship between average variable cost (AVC) and marginal cost (MC)?

  • AVC always increases when MC increases.
  • AVC and MC are always equal.
  • AVC and MC intersect at the minimum point of AVC (correct)
  • AVC always decreases when MC decreases.
  • What is the main difference between short-run and long-run cost curves?

    <p>Short-run curves show the cost of production for a fixed amount of capital, while long-run curves show the cost of production for varying amounts of capital. (B)</p> Signup and view all the answers

    Why is the long-run cost curve called an 'envelope' curve?

    <p>Because it envelopes all the short-run cost curves. (D)</p> Signup and view all the answers

    What occurs when the Marginal Cost (MC) curve starts rising?

    <p>It intersects the Average Variable Cost (AVC) curve at its minimum point. (C)</p> Signup and view all the answers

    Why is the Long Average Cost (LAC) curve referred to as an Envelop curve?

    <p>It encompasses multiple average cost curves for different production scales. (A)</p> Signup and view all the answers

    What does the learning curve depict regarding production costs?

    <p>Average production costs decline as output increases. (D)</p> Signup and view all the answers

    In the context of the provided data, what is the Average Fixed Cost (AFC) when output is 3?

    <p>18.75 (D)</p> Signup and view all the answers

    How does increased experience affect a firm's cost structure?

    <p>It allows for improved techniques, reducing costs. (C)</p> Signup and view all the answers

    What is defined as the cost directly incurred by an individual or firm in producing a good or service?

    <p>Private cost (A)</p> Signup and view all the answers

    Which of the following represents the total expenditure on all fixed and variable factors for producing a commodity?

    <p>Total cost (C)</p> Signup and view all the answers

    If a firm has zero output, which type of cost is also zero?

    <p>Variable cost (A)</p> Signup and view all the answers

    What does the average cost (AC) of production represent?

    <p>Total cost of production divided by the quantity produced (C)</p> Signup and view all the answers

    What would be the correct formula for marginal cost (MC)?

    <p>MC = Change in Total Cost / Change in Quantity (C)</p> Signup and view all the answers

    Which type of cost is incurred by society as a result of the production of a commodity?

    <p>Social cost (B)</p> Signup and view all the answers

    What is the main purpose of understanding costs for managerial decision-making?

    <p>To determine pricing strategies based on market demand (A)</p> Signup and view all the answers

    The cost that represents the amount to replace an existing asset is known as what?

    <p>Replacement cost (C)</p> Signup and view all the answers

    What defines marginal cost (MC)?

    <p>The change in total cost resulting from producing one additional unit. (B)</p> Signup and view all the answers

    Which of the following correctly distinguishes between sunk cost and incremental cost?

    <p>Sunk cost refers to costs incurred prior to a decision; incremental cost is the cost of a decision made. (D)</p> Signup and view all the answers

    How is implicit cost defined?

    <p>The opportunity cost of using resources owned by the entrepreneur. (A)</p> Signup and view all the answers

    What distinguishes accounting costs from economic costs?

    <p>Economic costs include both explicit and implicit costs. (C)</p> Signup and view all the answers

    In the short run, how does total fixed cost (TFC) behave as output increases?

    <p>It remains constant. (A)</p> Signup and view all the answers

    What is the relationship between total variable cost (TVC) and output level?

    <p>TVC increases with an increase in output. (B)</p> Signup and view all the answers

    Which statement best describes the shape of the total fixed cost (TFC) curve?

    <p>It is a horizontal straight line. (A)</p> Signup and view all the answers

    At zero output, what is the value of total variable cost (TVC)?

    <p>It is zero. (D)</p> Signup and view all the answers

    Which of the following statements is TRUE about the relationship between total cost (TC) and total variable cost (TVC)?

    <p>TC always exceeds TVC because fixed cost is constant. (D)</p> Signup and view all the answers

    Flashcards

    Short-run cost curve

    Represents costs where fixed costs remain constant.

    Long-run cost curve

    Represents costs with both fixed and variable costs changing.

    Fixed costs

    Costs that do not change with the level of production.

    Variable costs

    Costs that change based on the level of production.

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    Average Cost (AC)

    Total cost divided by the number of units produced.

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    Marginal Cost (MC)

    Change in total cost divided by change in output.

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    Sunk Cost

    Costs incurred that cannot be recovered once spent.

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    Incremental Cost

    Change in total cost due to a policy or managerial decision.

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    Implicit Cost

    Non-cash costs for using own resources in business.

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    Explicit Cost

    Direct cash payments made for production factors.

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    Accounting Cost

    Total of explicit costs for financial and tax purposes.

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    Economic Cost

    Includes both implicit and explicit costs in decision making.

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    Total Fixed Cost (TFC)

    Expenditure on fixed factors, constant across output levels.

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    MC Curve and AVC Intersection

    The point where marginal cost intersects average variable cost indicates minimum average variable cost.

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    AC and MC Relationship

    Marginal cost (MC) influences the average cost (AC); when MC is below AC, AC decreases, and vice versa.

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    Long Run Average Cost (LAC) Curve

    The LAC curve is formed by the lowest points of various short run average cost (SAC) curves, representing optimal production scaling.

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    Learning Curve Effect

    As production increases, the average cost decreases due to efficiencies gained from experience and learning.

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    Experience Curve

    Similar to the learning curve, this reflects cost reductions as firms improve production techniques over time.

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    Private Cost

    Costs directly incurred by an individual or firm producing a good.

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    Social Cost

    Costs incurred by society due to the production of a commodity.

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    Historical Cost

    The original money value spent when purchasing an asset.

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    Replacement Cost

    Amount required to replace the existing asset.

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    Total Cost (TC)

    Total expenditure on all fixed and variable factors for production.

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    TVC Curve

    Total Variable Cost (TVC) increases with output; starts at zero.

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    Total Cost (TC) Curve

    Total Cost (TC) is the sum of Total Fixed Cost (TFC) and Total Variable Cost (TVC).

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    Cost Function

    Describes the relationship between outputs and costs, derived from the production function.

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    AFC

    Average Fixed Cost (AFC) decreases as output increases, always positive.

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    AVC

    Average Variable Cost (AVC) decreases, reaches a minimum, then increases with output.

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    AC

    Average Cost (AC) combines AFC and AVC, also U-shaped, first declines then rises.

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    MC

    Marginal Cost (MC) shows the additional cost of producing one more unit; U-shaped curve.

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    Relationship between AC, AVC, AFC, and MC

    AC = AFC + AVC, MC intersects AC and AVC at their minimum points.

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    Study Notes

    Chapter 7 - Cost Concepts

    • Cost concepts cover the relationship between costs and output in short-run and long-run scenarios.
    • Short-run and long-run cost curves, and numerical problems are central to understanding cost.
    • Long-run average cost analysis is essential, along with learning curves.

    Concepts of Cost

    • Firms maximize profit by focusing on revenues and costs.
    • Profit can be increased by either increasing revenue or reducing cost.
    • Market forces generally dictate revenue, while cost reduction can be influenced by factors like production efficiency and output optimization.
    • Cost analysis helps businesses decide prices and production decisions.

    Private and Social Cost

    • Private cost are incurred directly by the producer or firm for the good or service.
    • Social cost is incurred by the society due to commodity production, often beyond the producer's direct costs.

    Historical and Replacement Cost

    • Historical cost is the original purchase price of an asset.
    • Replacement cost is the current cost to replace that same asset.

    Fixed and Variable Cost

    • Fixed costs are expenses that don't change with output levels (e.g., rent).
    • Variable costs do change with output levels (e.g., raw materials).

    Total, Average, and Marginal Cost

    • Total cost (TC) is the sum of all costs.
    • Average cost (AC) is per-unit total cost.
    • Marginal cost (MC) is the increase in total cost when producing one more unit.

    Sunk Cost and Incremental Cost

    • Sunk costs are those already incurred and cannot be recovered.
    • Incremental costs represent the changes in costs due to decisions.

    Cost and Output Relationship (Short-Run)

    • Total fixed cost (TFC) remains constant regardless of output levels.
    • Total variable cost (TVC) rises with increasing output levels.

    Cost and Output Relationship (Long-Run)

    • Total cost (TC) is sum of TVC and TFC.

    Average Cost and Marginal Cost Relationship

    • When MC is below AC, AC falls
    • When MC is above AC, AC rises
    • When MC equals AC, AC is at its minimum.

    Derivation of Long-Run Average Cost Curve

    • Long-run average cost (LAC) represents the lowest possible average cost for producing a given output level.

    Learning Curve Effect

    • Learning curve shows an inverse relationship between average cost of production and the level of output.
    • As output increases, the average cost of production declines as a result of experience.
    • Learning and experience leads to improved production techniques.

    Calculation of Various Costs: Examples

    • Detailed examples (Q7 and Q8) of calculating total cost (TC), average cost (AC), average fixed cost (AFC), average variable cost (AVC), and marginal cost (MC).

    Short-run vs. Long-run Cost Curves

    • Differentiate between short-run and long-run cost curves based on fixed versus variable costs and time horizons.

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    Chapter 7 - Cost Concept PDF

    Description

    This quiz covers essential cost concepts found in Chapter 7 of economics, focusing on both short-run and long-run cost curves. It explores private and social costs, as well as historical and replacement costs, providing a comprehensive understanding of how these factors influence profit maximization and production decisions.

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