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A Formula in the Theory of Correlation
Published online by Cambridge University Press: 31 October 2008
Extract
The formula in question gives the correlation between two variables for a number n1 and nz of individuals when the ordinary parameters, including correlations, are available for the separate groups of n1 and n2 individuals; and it is extended to more than two groups. It is possible, even probable, that the formula is known, but the writer has not found any direct references to it; in any case its practical value is such that there can be no harm in drawing attention to it.
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- Copyright © Edinburgh Mathematical Society 1933