Examlex
A compound dissolved in a solvent is called a(n) :
Experimental Manipulation
The deliberate alteration of the independent variable in an experiment in order to learn about its effects on the dependent variable.
Control Groups
In experimental research, a group of subjects that does not receive the treatment being tested and is used as a benchmark to measure how the other tested subjects respond.
Population
The whole number of people or inhabitants in a country or region.
Sample
The subset of the population that the investigator studies in order to learn about the population at large.
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