nonsystematic or random variabe that as a practical matter and for cost considerations it does not pay to introduce them into the model explicitly.
PERIPHERAL VARIABLE
Meaning of PERIPHERAL VARIABLE in English
Sean Woo's Finance, GIS and real estate English glossary. Английский глоссарий по ГИС(Географическая информационная система) и недвижимости Sean Woo's Finance. 2012