Meaning of VARIANCE in English
1. the variance of the data is the average squared deviation of all values from the mean. Because the variance involves squared differences, the calculated variance is sensitive to unusually high or low values.
2. is the squared difference of the values of two points.
Sean Woo's Finance, GIS and real estate English glossary. Английский глоссарий по ГИС(Географическая информационная система) и недвижимости Sean Woo's Finance. 2012