Approximations to the t distribution

In this paper, a few formulas are found to approximate the t cumulative distribution function. The formulas found in [5] to approximate the normal distributions are used to get good approximations for t. The derived formulas give good approximation for degrees of freedom greater than 3 and if the ex...

وصف كامل

محفوظ في:
التفاصيل البيبلوغرافية
المؤلف الرئيسي: Zogheib, Bashar (author)
مؤلفون آخرون: ElSaheli, Ali (author)
منشور في: 2015
الوصول للمادة أونلاين:http://dx.doi.org/10.12988/ams.2015.52148
http://hdl.handle.net/11675/871
http://www.m-hikari.com/ams/ams-2015/ams-49-52-2015/zogheibAMS49-52-2015.pdf
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الوصف
الملخص:In this paper, a few formulas are found to approximate the t cumulative distribution function. The formulas found in [5] to approximate the normal distributions are used to get good approximations for t. The derived formulas give good approximation for degrees of freedom greater than 3 and if the exact probabilities are less than 0.9.