Steven T. Garren

Fast Graphs of Statistical Distributions Using R

Steven T. Garren · Archives of Current Research International · 2016

When teaching elementary statistics courses, instructors may find themselves frequently drawing by hand the probability density functions of normal and t distributions. The author presents the R-package fastGraph, containing new functions in R, allowing graphs of probability dens...

Open access Research Article 10.9734/ACRI/2016/29429

Comparison of Threshold Rules for a Normal Approximation to a Binomial Distribution

Steven T. Garren · Journal of Scientific Research and Reports · 2015

A commonly used rule for determining if a Binomial(n, p) distribution may be reasonably approximated by a normal distribution is whether or not np and n(1 – p) are at least some constant, such as 10. Two competing rules, one based on the binomial variance and the other based on t...

Open access Research Article 10.9734/JSRR/2015/16653