Do you have to use annual reports for paper data?
Paper data don't have to use annual reports. Annual report is a common data source, but it may not be suitable for all types of research. When selecting data sources, it is necessary to choose according to the needs of research topics and research problems. In addition to the annual report, you can also use other types of data sources, such as statistical yearbook, survey data, experimental data, etc. At the same time, when using data sources, we also need to pay attention to the reliability and validity of data, and avoid using data with data defects or problems to ensure the accuracy of research results.