Vormistamine ülesanne 3
taken from a population.
Most books stress that survey methodology is a science and that there are scientific criteria for
survey quality. As a result, criteria for survey quality have been widely discussed. One very general
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definition of quality is fitness for use. This definition was coined by Juran and Gryna in their 1980s
book on quality planning and analysis, and has been widely quoted since. How this general
definition is further specified depends on the product that is being evaluated and
the user. For example, quality can be focusing on construction, on making sturdy and safe furniture,
and on testing it. Like Ikea, the Swedish furniture chain, that advertised in its catalogs with
production quality and gave examples on how a couch was tested on sturdiness. In survey statistics