Blar i Discussion Papers på forfatter "Zhang, Li-Chun"
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A method of weighting adjustment for survey data subject to nonignorable nonresponse
Zhang, Li-Chun (Discussion Papers;No. 311, Working paper, 2001)Abstract: Weighting adjustment is a standard quasi-randomization approach for survey data subject to nonresponse (Little, 1986). The existing methods are typically based on the assumption that nonresponse is independent ... -
A Note on Post-stratification when Analyzing Binary Survey Data Subject to Non-response
Zhang, Li-Chun (Discussion papers;218, Working paper, 1998-04)In this paper we follow up two notes of Thomsen (1973, 1978) and present some results on the estimation effect of post-stratification when analyzing binary survey data subject to non-response. Using an alternative ... -
A prediction approach to sampling design
Zhang, Li-Chun; Thomsen, Ib (Discussion Papers;No. 440, Working paper, 2005)Abstract: Standard approaches to sample surveys take as the point of departure the estimation of one or several population totals (or means), or a few predefined sub-totals (or sub-means). While the model-based prediction ... -
Evaluating multilateral price indices in a dynamic item universe
Zhang, Li-Chun; Johansen, Ingvild; Nygaard, Ragnhild (Discussion papers;914, Working paper, 2019-09)Statistics Norway has a long history of using scanner data in the Consumer Price Index (CPI). The early research – in Norway as well as internationally – was focused on supermarket data which consists largely of stable ... -
Markov Chain generated profile likelihood inference under generalized proportional to size non-ignorable non-response
Thomsen, Ib; Zhang, Li-Chun; Sexton, Joseph (Discussion Papers;No. 274, Working paper, 2000)We apply two non-ignorable non-response models to the data of the Norwegian Labour Force Survey, the Fertility Survey and the Alveolar Bone Loss Survey. Both models focus on the marginal effect which the object variable ... -
On dispersion preserving estimation of the mean of a binary variable from small areas
Zhang, Li-Chun (Discussion Papers;No. 285, Working paper, 2000)Abstract: Over-shrinkage is a common problem in small area (or domain) estimation. It happens when the estimated small-area parameters have less between-area variation than their true values. To deal with this problem, ... -
On some common practices of systematic sampling
Zhang, Li-Chun (Discussion Papers;No. 456, Working paper, 2006)Abstract: Systematic sampling is a 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 ... -
Post-stratification and calibration : a synthesis
Zhang, Li-Chun (Discussion Papers;No. 216, Working paper, 1998)The paper offers a synthesis of several widely used estimation methods in survey sampling from a rather personal point of view. The methods which will be discussed include post-stratification estimation, generalized ... -
Synthetic graphical modelling of binary panel data subject to non-response : a case study
Zhang, Li-Chun (Discussion Papers;No. 220, Working paper, 1998)The present paper applies synthetic graphical modelling to the binary panel data of the Muscatine Coronary Risk Factor Study, where the observations are subject to non-response. The methodology combines the techniques ... -
The Effect of using administrative registers in economic short term statistics: The Norwegian labour force survey as a case study
Thomsen, Ib; Zhang, Li-Chun (Discussion Papers;No. 273, Working paper, 2000)In case of a single survey at one time point, it is well known that combining administrative registers with survey data often substantially improves the quality of statistic production. However, in short term statistics ... -
A unit-error theory for register-based household statistics
Zhang, Li-Chun (Discussion Papers;598, Working paper, 2009)The next round of census 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 available, ...