  The purpose of this paper is to present an algorithm that determines the
necessary and sufficient number of significant digits in the coefficients of a
polynomial trend to achieve a pre-specified precision for the polynomial trend.
Thus, the obtained coefficients should be presented in the default output when
fitting the experimental data with the polynomial trend. Namely, when finding
the best fitting function for a certain type of data, there is a real
possibility of making significant errors when using the default output of the
Excel 2003, 2007, 2010, and 2013 and Statistica for Windows 2007-2012 software
packages. Conversely, the software package Mathematica (version 6) has been
very good at dealing with precision problems, although the default output
sometimes shows more significant digits than necessary.
