Examlex
A form of click fraud is called PTR, which is an acronym for
Posttest-Only Nonequivalent Groups Design
An experimental design in which different groups are compared only after the treatment or intervention, without a pretest comparison.
Pretreatment Differences
Variations among participants in a study that exist before the intervention or treatment is applied.
True Experimental Design
A research design that includes random assignment of participants to conditions and manipulation of an independent variable to determine its effect.
Random Assignment
A method used in experiments for distributing participants among various groups in a study, ensuring that each has an equal chance of being assigned to any group, to minimize bias.
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