build a better customer survey: from inefficient to efficient questionnaire design (english edition)  are you planning to carry out an online customer survey without outside assistance? if yes, then use this guide to create an efficient questionnaire for your business. we recommend e.g. a particular structure to be used in the questionnaire, followed by 14 multiple-choice and open-ended questions that you can immediately apply and take advantage of. the example questions are illustrated so that it is easier to build your own online survey, also from a technical point of view.