Frequently asked questions - Centrum pro výzkum veřejného mínění

What is the Public Opinion Research Centre and how is its research funded?

How accurate are survey estimates? Sampling error and non-sampling error

How does the Public Opinion Research Centre select respondents?

Is 1000 respondents enough?

Why are data sometimes weighted?

What do we have to be careful about when interpreting the results of public opinion research?

What are party preferences, voter preferences, and likely voter model?

Does the likely voter model predict the results of an election?

How accurate are survey estimates? Sampling error and non-sampling error

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