# what is root mean square error . how can it be used as cross validation in IDW method of spatial interpolation

IDW otherwise known as inverse distance weighting is simplest of all the spatial interpolation methods for measuring dispersion of air pollution

## All Answers (4)

Samah M. Abo-El-Hadid· Helwan UniversityNandita Sukla· Seoul National UniversityMartin Feldkircher· Oesterreichische NationalbankTon Kwaak· Panteia / EIMCan you help by adding an answer?