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A Central t Approximation to the Noncentral t Distribution

Helena Chmura Kraemer and Minja Paik
Technometrics
Vol. 21, No. 3 (Aug., 1979), pp. 357-360
DOI: 10.2307/1267759
Stable URL: http://www.jstor.org/stable/1267759
Page Count: 4
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A Central t Approximation to the Noncentral t Distribution
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Abstract

A central t-distribution approximation to the noncentral t distribution is suggested which is quite accurate even for moderate values of degrees of freedom, and is a more accurate approximation than is the normal approximation for small values of the noncentrality parameter δ.

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