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curvilinear trend

   Also found in: Encyclopedia 0.01 sec.
curvilinear trend
Etymology: L, curvus, bent, linea, line; AS, trendan, to turn
(in statistics) a trend in which a graphic representation of the data yields a curved line. The value of the independent variable may be expressed as a polynomial coefficient; by a more complete mathematic expression, such as a logistic curve; or by a smoothing process, such as a moving average.


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Human PCB determinations presented in Figure 1 show a curvilinear trend.
So will using a polynomial trending that will seek out curvilinear trends.
 
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