निम्नलिखित में से किसे आम तौर पर वैज्ञानिक अनुसंधान के एक मानक प्रकार या विधि के रूप में वर्गीकृत नहीं किया 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?