A questionnaire is a research tool consisting of a series of questions designed to gather information from respondents. It can be used in various fields, such as psychology, market research, and sociology, to collect data on opinions, behaviors, or demographics. Questionnaires can be administered in different formats, including paper, online, or face-to-face, making them versatile for different research needs. Typically, questionnaires include multiple-choice questions, open-ended questions, or rating scales. The design of a questionnaire is crucial, as clear and concise questions help ensure accurate responses. Analyzing the collected data can provide valuable insights and inform decision-making processes in various contexts.