Experimental research is referred to a hypothesis testing or a __________research method.

Data in experimental research must be able to be ___________

According to _____________, in a quasi-experimental research, the independent variable is manipulated, participants are not randomly assigned to conditions or orders of conditions .

Because the independent variable is _________ before the dependent variable is ___________, quasi-experimental research eliminates the directionality problem.

Interview began as a tool primarily for ___________ and anthropologists, while __________ got its start in the field of agricultural economics.

Which of the following is not an Action research model.

Case studies, in their true essence, explore and investigate contemporary real-life phenomenon through detailed _____________ analysis of a limited number of events or conditions, and their relationships.

Yin (1984:23) defines the case study research method “as an _____________________ that investigates a contemporary phenomenon within its real-life context;

What is the primary source of ethnographic data?