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Summary A Level Economics - Unit 3 £5.48   Add to cart
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  7. Unit 3 ECON3 - Economics: Business Economics and the Distribution of Income

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Summary A Level Economics - Unit 3

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My A Level Economics teacher was an AQA examiner so our lessons followed the course really well. These notes are a condensed version of the textbook, extra readings and our lessons and are the only thing I revised from and I got 100 UMS. They are easy to understand and are very accessible as lots o...

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  • September 2, 2016
  • 23
  • 2014/2015
  • Summary

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Costs of Production;

Short Run; when at least one factor of production is fixed which tends to be capital

Long Run; when all the factors of production are variable

Fixed Costs; A cost that remains the same whatever the level of output - Example;
insurance, rent

Variable Costs; A cost that changes depending on the level of output - Example; labour

Total Costs; Fixed costs plus variable costs

Marginal Costs; The extra cost of producing one more unit of output

The Law of Diminishing Returns;



- This states as more units of
labour are used, output will rise and
then fall. This occurs because the marginal
product of labour falls
- Because other factors of
production, usually capital, are
fixed in the SR, diminishing
returns occur when there is not
enough capital for the labour to
use e.g. lack of tools,
machines or space
- Diminishing returns is
only a SR concept as in the LR
capital can be increased
- However, although for small and medium sized businesses in the SR they usually
have fixed factor resources, the development of the global economy allows large
transnational corporations to source their inputs from more than one economy and
engage in rapid transfers of technology other information making this concept
flawed in the real world

The Minimum Efficient Scale;
- The minimum efficient scale (MES) is the output for a business in the long run where
the internal economies of scale have been fully exploited. It corresponds to the
lowest point on the long run average total cost curve and is also known as the output
of long run productive efficiency.
- It is shown below at Q3




1

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