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This document discusses two main types of questionnaires: open-ended and closed-ended. Open-ended questionnaires allow respondents to freely express their views and opinions without limitations. Closed-ended questionnaires restrict responses and are easier to analyze statistically. There are seven sub-types of closed-ended questionnaires: leading questions, importance questions, Likert questions, dichotomous questions, bipolar questions, rating scale questions, and buying propensity questions. Each sub-type is designed to elicit a specific kind of response.









