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The calculation of R 2 and the test of significance for the least squares regression solution through the origin are not well documented in textbooks. Many of the statistical packages compute these statistics in such a way that the researcher may easily, though inadvertently, be misled. This paper contains a detailed discussion, supplemented by an example, of the formulae required to properly calculate these statistics. Also, recommendations for correcting misleading computer results are presented.
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Kozak et al. (1995) studied this question.
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