Meaning of TREND in English

TREND

a surface composed of polynomials of the X and Y coordinates and random errors . The polynomials (nonrandom part or trend of the spatial model) usually models the long-range or coarse-scale variation, leaving random errors to model the fine-scale variation.

Sean Woo's Finance, GIS and real estate English glossary.      Английский глоссарий по ГИС(Географическая информационная система) и недвижимости Sean Woo's Finance.