Questionnaire design is a systematic process of developing a set of questions to collect relevant, reliable and measurable information from respondents. In quantitative analysis and managerial application, a well-designed questionnaire is important because the quality of statistical analysis and managerial decisions depends largely on the quality of the data collected. The process begins with clearly defining the research problem and objectives. The researcher must identify what information is required and how it will be used for analysis and decision-making. The next step is to determine the type of information needed from respondents. This may include facts, opinions, attitudes, preferences, behaviour or demographic characteristics. After identifying the required information, the researcher decides whether each question should be open-ended or closed-ended. Closed-ended questions, such as multiple-choice, dichotomous and rating-scale questions, are generally preferred in quantitative research because their responses can be easily coded and statistically analysed. Open-ended questions may be used when detailed opinions or unexpected responses are important. The wording of questions is another critical stage. Questions should be simple, clear, specific and easily understood by the target respondents. Technical terms, ambiguous expressions and complicated sentences should be avoided.