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The Advent of Dynamic Graphics Statistical Computing

Easy-to-use microcomputer statistics programs are becoming available, programs that take advantage of the dynamic interaction possibilities of personal computers. This article outlines these dynamic features and describes the performance of several microcomputer statistics programs. The first generation of microcomputer stat programs was rudimentary; the sole advantage of these programs was that they allowed statistics to be computed on personal computers. Second-generation programs were easier to operate, and, as a result, were more useful for teaching. The development of microcomputer versions of the major mainframe stat programs offered further improvement by providing the full set of statistics available in their mainframe packages, but most were no easier to operate than their mainframe cousins. By contrast, newer dynamic programs provide significant advances that are worth examining. Our experience with these programs was enriched in the summer of 1992 when the department of political science at the Ohio State Uni-