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Title:
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EVALUATION OF THE ACCURACY OF THE NORMAL APPROXIMATION TO NON-CENTRAL STUDENTS T DISTRIBUTION USING SPSS |
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Author(s):
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António Teixeira , Álvaro Rosa , Teresa Calapez |
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ISBN:
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978-972-8924-97-3 |
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Editors:
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Hans Weghorn and Pedro Isaías |
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Year:
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2009 |
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Edition:
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V II, 2 |
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Keywords:
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Non-central distributions, power analysis, normal approximations. |
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Type:
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Reflection Paper |
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First Page:
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285 |
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Last Page:
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288 |
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Language:
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English |
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Cover:
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Full Contents:
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click to dowload 
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Paper Abstract:
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One of the limitations of performing statistical power analyses with general purpose software like Excel is the absence of
functions for the non-central distributions. We are conducting a research project about the accuracy of the normal
approximations presented in Abramovitz and Stegun (1965) that includes these distributions. This paper addresses the
case of the non-central Students t for which only one formula is presented. The package SPSS was used having in view
the development of a wider model to perform statistical power and precision analysis and this kind of evaluation using
Microsoft Office as integrator environment. |
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