polynomial trend

polynomial trend

[¦päl·i¦nō·mē·əl ‚trend]
(statistics)
A trend line which is best approximated by a polynomial function; used in time series analysis.
References in periodicals archive ?
The depth of each eclipse during outburst was measured by taking the difference in magnitude between the 4th order polynomial trend at mid-eclipse and the fitted minimum magnitude.
The mapping capabilities in Explorer can be further enhanced by Paradigm's geostatistics mapping add-on, which includes such new functionalities as collocated cokriging, Bayessian kriging and optimum polynomial trend estimation.