not changing or varying; uniform; regular; invariable

an experiment or trial that uses controls, usually separating the subjects into one or more control groups and experimental groups.

(used with a plural verb) individual facts, statistics, or items of information

the event studied and expected to change when the independent variable is changed.

a variable that is intentionally changed to observe its effect on the dependent variable.

a branch of knowledge or study dealing with a body of facts or truths systematically arranged and showing the operation of general laws

a coherent group of propositions formulated to explain a group of facts or phenomena in the natural world and repeatedly confirmed through experiment or observation

A PHENOMENON OF NATURE THAT HAS BEEN PROVEN TO INVARIABLY OCCUR WHENEVER CERTAIN CONDITIONS EXIST OR ARE MET

the branch of knowledge that deals with the creation and use of technical means

an act or instance of regarding attentively or watching.

the process of arriving at some conclusion that, though it is not logically derivable from the assumed premises