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Economies and Diseconomies of Scale

Internal and external economies reviewed

  • 3 things to know
  • Unit A2 1

Overview

External economies of scale, internal diseconomies of scale and external diseconomies of scale.

What you need to know

Answer each one before you reveal it.

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Key term

Define external economies, internal diseconomies and external diseconomies of scale, and say how purchasing economies arise.

Key term

How do risk-bearing economies work, and how do labour pools, infrastructure and knowledge spillovers create external economies?

Key term

Define external economies of scale.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Define external economies of scale.

    Model answer

    Cost advantages that benefit all firms within an industry as the industry itself grows.

  2. 2

    What are internal diseconomies of scale?

    Model answer

    Cost disadvantages that arise within a single firm when it grows beyond its optimal size.

  3. 3

    Define external diseconomies of scale.

    Model answer

    Cost disadvantages affecting all firms in an industry as the industry expands.

  4. 4

    Explain how purchasing economies of scale arise.

    Model answer

    Larger firms can negotiate bulk-buying discounts from suppliers, reducing the cost per unit of inputs.

  5. 5

    Why can larger firms access finance at lower interest rates?

    Model answer

    Because lenders perceive them as lower risk, resulting in financial economies of scale.

  6. 6

    How do managerial economies of scale improve efficiency?

    Model answer

    By employing specialist managers whose expertise increases efficiency across larger operations.

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A ratio.
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AMarket growth = ((1950 − 1450) ÷ 1450) × 100 = 34.5 %.
BSales volume is the total quantity of units sold in a market.
CSales value is the total revenue generated from sales in a market.

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A salary is a fixed annual amount.
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