217-2013: A SAS® Macro for Generating a Set of All Possible Samples with Unequal Probabilities without Replacement
نویسندگان
چکیده
This paper considers listing all possible samples of size n with unequal probabilities without replacement in order to find the sample distribution. The main application of that is to estimate the Horvitz-Thompson (HT) estimator and possibly to know the shape of its sample distribution to construct confidence intervals. The algorithm computes all possible samples of the population, in contrast with PROC SURVEYSELECT which generates any samples of size n, but not all possible samples, and at the end it is possible to plot the sample distribution of the estimator. The equations are encoded in a SAS/IML Macro and the graphics are made using PROC GPLOT.
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