Introduction to Research Design and Statistics

Sampling Designs


Population, Units, Subjects and Samples

The entire group of objects, people or variables about which information is wanted is called a population. Individual members of the population are called units. When we are studying people, we called the units subjects. A sample is a part of the population that is examined in order to gather information about the population.

Types of Samples

Cautions About Sampling


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Phil Ender, 30Jun98