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Non-systematic deviation from mathematical expectations caused by random factors or individual differences.

A statistical method for estimating the effect of independent variables and their groupings on a dependent variable. It is used to process data from factorial.

A task feature in the test to differentiate between examinees with respect to the “maximum” and “minimum” values of the scale. To evaluate them. A.

Part of debriefing. In it, the examiner removes disturbances to the normal psychological state or psychological equilibrium that have arisen as a result of the.

An experiment conducted by an assistant examiner who does not know the true goals of the study. The examiner also does not know the purpose.