A kérdőív is a structured set of questions designed to gather information from respondents. It is commonly used in research, surveys, and assessments to collect data on opinions, behaviors, or demographics. Kérdőívek can be distributed in various formats, including paper, online, or face-to-face interviews. The design of a kérdőív is crucial for obtaining accurate and reliable responses. Questions can be open-ended, allowing for detailed answers, or closed-ended, providing specific options for respondents to choose from. Properly constructed kérdőívek help researchers analyze trends and make informed decisions based on the collected data.