सैद्धांतिक अवधारणाओं से जुड़े संबंधों के पूर्वानुमान को किस रूप में जाना जाता है?

A researcher wants to explore the effect of possible factors on the organization of effective computer-based learning interventions in schools. Which research method is most appropriate for this study?

Which of the following steps is NOT essential while designing a questionnaire?