curvilinear trend


Also found in: Medical.

curvilinear trend

[‚kər·və′lin·ē·ər ′trend]
(statistics)
A nonlinear trend which may be expressed as a polynomial or a smooth curve.
References in periodicals archive ?
Human PCB determinations presented in Figure 1 show a curvilinear trend.
A visual inspection of this data plotting strongly reinforces the curvilinear pattern that was concluded previously and demonstrates that the curvilinear trend line was in fact a reasonable and adequate representation of actual market behavior.
In addition, curvilinear trend lines will be extended to the turn of the century.
Many examples of that blatant omission are apparent: The chapter on loss forecasting suggests that in making adjustments for price level changes, the risk manager should "round the result to the nearest $100 to simplify later calculations," thus implying that the appropriate use of computer systems for this procedure had been overlooked; and a later statement in this chapter suggests that a risk manager should "turn to a trained statistician" because computing a curvilinear trend line is complex--although, again, one could expect a present-day risk manager to use an appropriate software package for this purpose.
Holistic ratings showed no significant linear or curvilinear trend over the four assessment periods, partly due to the variability among individual scores.