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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Rucha rajesh shingvekar Best Answer
The assignment of subjects to different groups is based on whichever variable is of interest to the researchers. For example, a researcher is interested in how weight influences self-esteem levels in adults. ... This is an ex post facto design because a pre-existing characteristic (weight) was used to form the groups. options (d)