Vormistamine ülesanne 3
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
the main focus has been on accuracy, on reducing the mean squared error or MSE. This is based on
the Hansen and Hurwitz model (Hansen, Hurwitz, & Madow, 1953; Hansen, Hurwitz, & Bershad,
1961) that differentiates between random error and systematic bias, and offers a concept of total
error (see also Kish, 1965), which is still the basis of current survey error models. The statistical
annaabi.ee 
