The most frequent design is option d.) 2 2 4 3 when a researcher planned an experiment in which four independent variables were altered.
In an experiment, the researcher modifies one factor (the independent factor) to ascertain its impact on a different factor (the dependent variable).One independent variable (IV) is changed by the researcher to produce a set of two or more treatment conditions. (2) Measuring. In order to generate a set of scores for each treatment condition, a group of participants' second dependent variable (DV) is measured.
