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The Two Sample Problem

Alan H. Dorfman


It sometimes happens that two separate samples from a population, having perhaps quite distinct designs and mode of sampling, contribute information on the same variable of interest, and it becomes an important question how to combine the data from the two samples. An example is the Occupational Employment Statistics survey (OES) and the National Compensation Survey (NCS), carried out by the Bureau of Labor Statistics, both contributing information on occupational wages. We discuss some new options for combining data from two samples and achieving unified estimation.