Examlex
To contain the Soviets within its existing sphere of influence, U.S. foreign policy makers utilized __________.
Experimenter's Manipulations
The deliberate alteration of variables by a researcher in an experiment to determine their effects on the outcome.
Standard Deviation
A commonly used measure of variability that indicates the average difference between scores in a distribution and their mean.
Arithmetic Mean
An average that is calculated by adding up a set of quantities and dividing the sum by the total number of quantities in the set.
Experimenter Effects
Influences that the experimenter's presence, behavior, or characteristics may have on the outcome of an experiment.
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