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Module 1: Symmetry

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Comparing sample and population

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XSIQ
*

Core Mathematics - Comparing sample and population

Comparing sample and population

A_ population_ is the whole set of items from which a_ sample_ can be
drawn.

If information is required about a certain population, a_ random sample_
may be selected, rather than a survey of all items in the population.

* A sample is random if each piece of data has the same probability of
being selected.

* A common technique for selecting a random sample is to assign each
piece of data a number and then generate the required quantity of random
numbers using a calculator or a table of random numbers.

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