Observations, treatments or interventions, groups, assignment to group, and time are all essential elements of ________________.
A) qualitative study
B) experimental design
C) research
D) secondary data collection

Question

Quizplus · Accepted Answer

These elements are essential components of experimental design, which involves manipulating variables and measuring outcomes to establish cause-and-effect relationships. Qualitative studies may not involve experimental interventions, and may not necessarily involve group assignments or strict timeframes. Research can encompass many different methodologies, so these elements are not necessarily universal to all research. Secondary data collection refers to the use of existing data sources, which may or may not involve these elements depending on the nature of the data being collected.

Observations, Treatments or Interventions, Groups, Assignment to Group, and Time