What Do Demographers Mean When They Use the Concept of "Doubling

question 10

Multiple Choice

What do demographers mean when they use the concept of "doubling time" in their discussions of changes over time in the size of a population?

• A) The number of years it would take for a population to double its size if its current birth rates and death rates are maintained.
• B) The number of years it would take for a population to half its size if its current birth rates and death rates are maintained.
• C) The number of months it would take for a population to double its size if its current birth rates and death rates are maintained.
• D) The number of months it would take for a population to half its size if its current birth rates and death rates are maintained.
• E) The number of years it would take for a population to become two times larger if its birth rates and death rates and immigration rates are maintained.

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Definitions:

Marginal Revenue

The additional financial return from selling a further unit of a good or service.

Marginal Cost

The increase in cost that arises from producing an additional unit of a good or service.

Profits

The financial gain made in a transaction or operation, calculated as the difference between revenue and costs.

Marginal Cost

The cost of producing one additional unit of a good or service, crucial for decision-making on output levels.