A Solution to the Design and Implementation of a Fast-track Survey: Two-phase Sampling
نویسندگان
چکیده
A new Retail Commodity Survey was launched by Statistics Canada in January 1997, to obtain more information on commodity by sales in Canada. The survey is based on a two-phase sample design, where the first phase is the Monthly Retail Trade Survey, in place since 1988. Information from the first phase is used in all steps of the commodity survey in order to maximize the efficiency of the design: Multivariate sample allocation, sample selection, maintenance and imputation. Some development has been done to provide explicit variance estimation methods for a two-phase stratified sampling design where the second phase sample is selected form the restratified first phase sample.
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