What is the primary purpose of a questionnaire in research?

The primary purpose of a questionnaire in research is to collect information from a large sample. This method allows researchers to gather data efficiently from a broad population, enabling them to identify trends, correlations, and patterns that may not be apparent from smaller samples. By reaching a larger group, questionnaires can improve the validity and reliability of the research findings, as they capture diverse perspectives and experiences.

Using a large sample size enhances the generalizability of the results, meaning the findings can be applied to wider populations rather than just a select few individuals. This is particularly important in social research, where understanding the nuances of various groups within society is crucial for drawing meaningful conclusions. Therefore, the ability of questionnaires to facilitate widespread data collection is what underscores their central role in research methodologies.