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A New Angle on the t-Test

Graham R. Wood and David J. Saville
Journal of the Royal Statistical Society. Series D (The Statistician)
Vol. 51, No. 1 (2002), pp. 99-104
Published by: Wiley for the Royal Statistical Society
Stable URL: http://www.jstor.org/stable/3650393
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A New Angle on the t-Test
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Abstract

R. A. Fisher's early work on linear models relied heavily on his knowledge of n-dimensional geometry. To illustrate this, we present an elementary, complete, modern day account of Fisher's geometric approach for the simple case of a paired samples t-test for a sample size of 3. A natural consequence of this approach is a surprisingly simple and explicit expression for the p-value.

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