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Research operations project with specially selected groups. It includes the definition of group composition. group objects selection of variables rotation of effects. independent variable measurement.

An experiment aimed at finding and establishing the relationship between variables in the early stages of research. It allows you to formulate a hypothesis. highlight.

It is a parameter of reality and/or can be changed in an experimental study. They are characterized as independent variables – changed by the examiner;.

A generally recognized approach to the study of reality at a particular stage in the development of science. It includes the goals of science, methods.

is a statistical indicator that characterizes the accuracy of measurements of the dependent variable. Dispersion measures are used as estimates of measurement error. and, in.