• On some common practices of systematic sampling 

      Zhang, Li-Chun (Journal article; Peer reviewed, 2008)
      Systematic sampling is widely used technique in survey sampling. It is easy to execute, whether the units are to be selected with equal probability or with probabilities proportional to auxiliary sizes. It can be very ...
    • On the Bias in Gross Labour Flow Estimates Due to Nonresponse and Misclassification 

      Zhang, Li-Chun (Journal article; Peer reviewed, 2005)
      Abstract: I evaluate and compare the bias due to nonresponse and misclassification in the sample gross labour flow estimates from the Norwegian Labour Force Survey (LFS). These help also to explain the level and net change ...
    • Quality Issues at Statistics Norway 

      Sæbø, Hans Viggo; Byfuglien, Jan; Johannessen, Randi (Journal article; Peer reviewed, 2003)
      Statistics Norway has like other National Statistical Institutes (NSIs) worked with quality for many years, but we have now started a systematic approach, inspired by the TQM principles and the work on this in several NSIs. ...
    • Simultaneous estimation of the mean of a binary variable from a large number of small areas 

      Zhang, Li-Chun (Journal article; Peer reviewed, 2003)
      We develop a frequentist method of simultaneous small area estimation under hierarchical models. The simultaneous estimator is the best ensemble predictor under the model. It is preferable to the area-specific best predictor ...
    • Simultaneous estimation under nested error regression model 

      Zhang, Li-Chun (Journal article; Peer reviewed, 2004)
      Zhang (2003) proposed a frequentist method of simultaneous small area estimation under hierarchical models. This can be useful when various ensemble characteristics of the small area parameters are of interest in addition ...
    • Survey sampling : a necessary journey in the prediction world 

      Bjørnstad, Jan F. (Chapter, 2010)
      The design approach is evaluated, using a likelihood approach to survey sampling. It is argued that a model-based approach is unavoidable from a scientific point of view. Estimating population quantities can then be ...
    • A unit-error theory for register-based household statistics 

      Zhang, Li-Chun (Journal article; Peer reviewed, 2011)
      Abstract: The next round of censuses will be completely register-based in all the Nordic countries. Household is a key statistical unit in this context, which however does not exist as such in the administrative registers ...
    • Using register data to evaluate the effects of proxy interviews in the Norwegian labour force survey 

      Thomsen, Ib; Villund, Ole (Journal article; Peer reviewed, 2011)
      We combine data from the Norwegian Labour Force Survey with register data in order to evaluate the impact of proxy interviews on the survey-based employment rate estimates. The method compares estimates under different ...