Using a questionnaire to collect information from people (conducting surveys) is an important part of research. I have lots of experience conducting surveys. My first survey was for an A-Level project at President's College. The course/subject was Pure Mathematics with Statistics (it was for the Statistics part). I designed the questionnaire and went out into the field to collect information from participants. That was about 30 years ago.
From Statistics, I learned how to prepare statistical summaries or reports that summarize information by providing statistics. Those are the reports that include statements such as: Expenditures increased by 20% to reach $1M. Such reports are used a lot in finance and economics. An example is the report 'Trends in health care spending' by AMA, available at: https://www.ama-assn.org/about/research/trends-health-care-spending.
During my PhD studies, I prepared a paper on the design of surveys/questionnaires for research. In that paper, I reviewed an actual survey. I learned current techniques as well as survey design issues.
.png "Screenshot providing excerpt from paper on survey design by Fahmeena Odetta Moore - 1")
.png "Screenshot providing excerpt from paper on survey design by Fahmeena Odetta Moore - 2")
.png "Screenshot showing part of AMA report on Trends in health care spending - 1")
.png "Screenshot showing part of AMA report on Trends in health care spending - 2")
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