In painting, yes. But a drawing can also be observational.
An observational essay is an essay that explains and describes anything or anyone that they have observed.
Observational study
in vivo
There are several different types of documentaries. Some of these are, expository documentary, observational documentary, and the observational documentary.
If we're talking about statistics: There is no superior observational study, each study has its advantages and disadvantages.
observational
Physics, mathematics, and observational telescopic astronomy. The latter, observational astronomy, he practically invented.
Aryabhatta Research Institute of Observational Sciences was created on 1954-04-20.
Observational and experimental data are almost always recorded and analyzed in numerical form.
In an observational study, a scientist will never draw attention to himself or herself. They will also not attempt to randomize a study.
In Vivo