Geostatistics: which interpolation method should you use?

You have a number of observations in space, e.g. noise level, CO2 measurements, socioeconomic data by administrative units with missing data for some units, etcetera. Now you want to interpolate these measurements into a continuous surface.

Ordnance Survey background map – streamed into ArcMap

You can see your own data in ArcMap, now wouldn’t it be good to automatically have an OS map in the background,