Collecting data when writing scientific research papers is a very specific work link in the whole research process. The scientific research data collected directly from the research object through various methods such as measurement, questionnaire survey and observation are called original data, and the records must be reliable and cannot be changed by themselves.
The authenticity and accuracy of data are directly related to the authenticity and scientificity of research results, so data collection should be carried out in strict accordance with the methods and requirements specified in the design scheme. The commonly used data collection methods are observation, questionnaire survey and measurement. The original materials and data collected in the research should be scientifically classified and summarized first to make the materials systematic and easy to analyze and describe. Then use appropriate statistical methods to analyze, in order to find out the regular answers and draw meaningful conclusions.
Original materials refer to first-hand materials, which are directly collected and experienced, including original documents, physical materials and oral materials. Such as original documents, files, letters, diaries, memoirs, photos, cultural relics and other physical objects used in scientific research, as well as questionnaires, experimental data, interview records, etc.
China Data Network accesses the official website "People's Republic of China (PRC) National Bureau of Statistics" to find the data, and then you can click on the relevant data query in "Data Query", including annual, quarterly and monthly data, as well as census, international and departmental data, as well as data query of subdivided indicators. For example, the annual data indicators include national economy, population, foreign economic relations and trade, energy, finance, price index, industry and agriculture, social services, fixed assets investment and real estate. , and you can search the data of the last 5 years, 10 years and 20 years.