What is observational?

Some articles on observational:

Center For International Blood And Marrow Transplant Research - Research Activities - Observational Research
... Observational research is a core activity of CIBMTR ... to propose studies that utilize CIBMTR’s large observational database ...
Observational Astronomy
... Observational astronomy is a division of the astronomical science that is concerned with getting data, in contrast with theoretical astrophysics, which is mainly concerned with finding out the ... This allows for observational data to be plotted on graphs, and general trends recorded ...
Strengthening The Reporting Of Observational Studies In Epidemiology
... STROBE (STrengthening the Reporting of OBservational studies in Epidemiology) Statement is a reporting guideline including a checklist of 22 items that are considered essential for good reporting ...
Observational Science
... An observational science is a science where it is not possible to construct controlled experiments in the area under study ... Other examples of necessarily observational sciences include geology, paleontology, epidemiology, and much of the social sciences ... Other fields of scientific study can have observational as well as experimental aspects ...
Savanna (owarai)
... Their act is heavily based on observational humor, and Yagi frequently being confused as the boke of the group ... Officially, he is the tsukkomi of the two, and he usually plays the "normal guy" in their observational humor acts ... While Savanna has performed over 100 observational humor acts (neta) on stage, it is rumored that Yagi has created a usable stock of over 500 ...