Sample Co-ordination Using Simple Random Sampling with Permanent Random Numbers (Method)


The purpose of this module is to introduce the reader to the Permanent Random Number (PRN) technique for co-ordinating (stratified) simple random samples. The concept of co-ordination based on PRNs using simple random sampling was introduced in Sweden in the early 70s (see, e.g., Ohlsson, 1992). This technique provides a practical solution for controlling the overlap (the number of common units) between different samples.

The methods developed and used by Statistics Sweden (Ohlsson, 1992) and the Institut National de la Statistique et des Études Économiques (INSEE) of France (Cotton and Hesse, 1992) are both methods of co-ordination of simple random samples using PRNs and will be briefly described.


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