Comment

Risto LehtonenUniversity of Helsinki

Quality 2010 Conference, 4-6 May 2010, Helsinki

First message (to me) from Carl-Erik Särndal’s talk

The method of classical probability sampling does not work anymore in governmental social surveys because of increasing nonresponse rates (and diverging patterns of nonresponse)

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Probability sampling tradition…

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Even a stronger message: Paradigm shift

The paradigm of classical probability sampling is shifting / has shifted in the context of Official statistics

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Paradigm shiftMore complex strategies have

gradually superseded the strategies relying solely on probability sampling

BUT: Probability sampling still constitutes a component in the new strategies

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Looking beyond Official statistics… serious questions have arisen…

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…in online survey methods…

No data are better than bad data?

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…also referring to Official stats

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Signs of paradigm shift

Mainstream statistics and survey sampling are more and more interacting and learning from each other

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Signs of paradigm shift…

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Signs of paradigm shift…

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Signs of paradigm shift…

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Dominating paradigm in Official statistics

Design-based model-assisted survey sampling

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…proposal for new paradigm

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...a possible new paradigm…

Register-assisted survey sampling

Forthcoming paradigm shift?

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High policy relevance of paradigm shifts

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