Jones, M. C.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1016/j.jkss.2008.06.002|
|Google Scholar:||Look up in Google Scholar|
Student’s t distribution arose as a normal-based sampling distribution and has huge application as such. In modern times, the t distribution has also found considerable use as a symmetric heavy-tailed distribution for empirical data modelling. In this the centenary year of Student’s introduction of the t distribution, this paper constitutes a personal–and sometimes somewhat tangential–tribute to the Student-t family of distributions, by way of an exploration of some of its close and not-so-close relations. I start with a brief reminder of the (symmetric) Student-t family, with particular focus on the t distribution on two degrees of freedom which turns out to play an important role in what follows. The “close relations” of the t distribution include a number of ‘skew-t’ distributions, of which I shall briefly introduce and comment on three. The “distant relations” of the t distribution are a further trio of four-parameter families of distributions allowing control of skewness and tailweights, with particular emphasis on members of the families with (t-like) ‘power’ density tails.
|Item Type:||Journal Article|
|Keywords:||exponential tails; heavy-tailed distribution; order statistics; power tails; sinh–arcsinh; skew-t distribution; student|
|Academic Unit/Department:||Mathematics, Computing and Technology > Mathematics and Statistics
Mathematics, Computing and Technology
|Depositing User:||Colin Smith|
|Date Deposited:||09 Jul 2009 11:21|
|Last Modified:||15 Jan 2016 11:36|
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