On random sample size, ignorability, ancillarity, completeness, separability, and degeneracy: Sequential trials, random sample sizes, and missing data
نویسندگان
چکیده
منابع مشابه
Missing at Random , Likelihood Ignorability and Model Completeness
This paper provides further insight into the key concept of missing at random (MAR) in incomplete data analysis. Following the usual selection modelling approach we envisage two models with separable parameters: a model for the response of interest and a model for the missing data mechanism (MDM). If the response model is given by a complete density family, then frequentist inference from the l...
متن کاملOptimization of Random Sample Size in Progressively Type II Censoring based on Cost Criterion
So far censored samples have been studied by many researchers. One of the most important methods of censoring is progressively type II censoring. An interesting issue in the discussion of censoring is determination of the optimal sample size. Various factors are influential in determining the appropriate sample size, the most important of which is the sampling cost criterion. In this paper, ass...
متن کاملOptimal Non-Parametric Prediction Intervals for Order Statistics with Random Sample Size
In many experiments, such as biology and quality control problems, sample size cannot always be considered as a constant value. Therefore, the problem of predicting future data when the sample size is an integer-valued random variable can be an important issue. This paper describes the prediction problem of future order statistics based on upper and lower records. Two different cases for the ...
متن کاملBayesian Determination of Sample Size in Longitudinal Studies with Binary Responses Using Random Effects Models
Sample size determination is important in all statistical studies including longitudinal studies. This is usually done by considering a target power to reduce the costs of sampling. Choosing the right sample size using efficient methods, ensures that the researcher achieve goal of the study, by spending the least amount of energy, time and money. In this article, using a method based on simulat...
متن کاملMicrodatadisclosurelimitationin Statistical Databases: Quev Size and Random Sample Qwy Control
A probabilistic framework can be employed to assess the n“skof disclosure of confidential information in statistical databases that use disclosure control mechanisms. We illustrate how the method may be used to assess the strengths and weaknesses of two tm”stingdisclosure control mechanisms quey set size res&”ctioncontrol and random sample query control mechanisms. Our results indicate that nei...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Statistical Methods in Medical Research
سال: 2012
ISSN: 0962-2802,1477-0334
DOI: 10.1177/0962280212445801