In experimental designs an R stands for:
A)restricted use of complex variables
B)random assignment of research subjects (e.g. stores)to groups (experimental and control)
C)random assignment of treatments to either the independent or the dependent variables
D)the reliable variable
E)There is no R in experimental design terminology.

Question

Quizplus · Accepted Answer

In experimental designs, R stands for random assignment of research subjects to groups (experimental and control). This means that participants or subjects are assigned to these groups in a random manner to minimize the effects of extraneous variables that could influence the outcome of the study.

In Experimental Designs an R Stands For