The Public Opinion Research Centre (CVVM) is one of the research departments at the Institute of Sociology of the Czech Academy of Sciences. It is not a private company or agency, but a public research institution, like…
A key concept for determining the quality of any research is accuracy or, in other words, the degree to which the measured estimates correspond to reality. No research in any field is absolutely accurate; errors will…
In any research that aspires to obtain information on large populations, the basic objective in selecting respondents is to obtain a representative sample of people. ‘Representative’ means that the sample of selected…
Because it is not the entire population that is interviewed in public opinion research but only a representative sample of it, it is unavoidable that sampling error will occur. We can imagine this as the degree of…
Sometimes the ideal of obtaining a representative sample is in practice obstructed by unavoidable circumstances accompanying the research. This happens when the share represented by some groups in a sample (for example,…
When interpreting the results of any sample survey it makes sense to be circumspect about the data we are working with. In the paragraphs below we will look at everything that it is necessary to be careful about, watch…
An agreement initiated by the Association of Public Opinion and Market Research Agencies (Sdružením agentur pro výzkum trhu a veřejného mínění – SIMAR) led to the introduction of standardised terminology for…
While the term likely voter model may give the impression that its purpose is to model the results of a real election, this is not what it does. The aim of a likely voter model is to model the results of a hypothetical…
A key concept for determining the quality of any research is accuracy or, in other words, the degree to which the measured estimates correspond to reality. No research in any field is absolutely accurate; errors will…
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