probability sampling
statistics, research methods, and measurement
external validity
internal validity
representativeness
statistics
law and society research
conceptual foundations of GIS
research design
data collection
purposive sampling
sampling
Sampling is the selection of a given number of units of analysis (people, households, firms, etc.), called cases, from a population of interest. Generally, the sample size (n) is chosen in order to reproduce, on a small scale, some characteristics of the whole population (N) Sampling is a key issue in social research designs. [Source: Encyclopedia of Survey Research Methods; Sampling]
item sampling
representative sample
methods
parameters
random sampling
snowball sampling
sampling error