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Particular statistical techniques are discussed within a general description of statistical methodology. A simple comparative experiment is used to illustrate the general exposition. It is supposed that statistics aims to provide concepts, principles, and rules for obtaining consistency among three aspects of an experimental investigation: objectives, acquisition of data, and data analysis. The concepts of experimental universe and statistical model are taken to be fundamental to this purpose. An experimental universe is generated and sampled as a consequence of objectives and data acquisition designs. Objectives are reached by analyzing the data with respect to statistical models that represent associations among universe variables. Consistency of objectives, designs, and analysis for the example are attained by using the techniques of randomization, replication, estimation, and significance tests.
Irick, P. E.
Chief, Data Analysis Branch, Ottawa, Ill.