Data Quality Research Of China's GDP Based On International Comparability

Along with the expediting of China's connecting with the world, the data quality of China's GDP has become a major focus of numerous domestic and foreign institutions and scholars'researches. And it is queried by many institutions or scholars. But the researches on the data quality of China's GDP are still in the initial stage. Most of the researches just put emphasis on the accuracy of the data or were carried out only from the theoretical analysis.The author contends that to evaluate the data quality should be a systematic procedure and it's too simple to measure it from a certain separate angle because the complex production procedures of statistical data have brought in numerous influence factors for the data quality.Based on the data quality definition defined by International Monetary Fund(IMF), the author studies the data quality of China's GDP in two perspectives: the international comparability of data quality theory of China's GDP and the international comparability of data quality practices. First, the author compares the data quality theory of China's GDP with the international standards and find out the differences and lacks. Then, based on the data quality assessment framework framed by IMF, the author sends questionnaires to obtain the index data and evaluate data quality of China's GDP as well as some representational countries of the world in the aspect of data collecting, processing, disseminating and so on by using fuzzy comprehensive evaluation model. The author also compares the assessment result of China with that of the representational countries. The study shows that there are some gaps between the data quality theory of China's GDP with the international standards and the grade of data quality practices of China's GDP is far below the representational countries'. The aspect of accuracy and reliability gets the lowest grade.At last, basing on the result of the theoretical and positive study of data quality of GDP, the author makes some suggestions to increase the international comparability of data quality theory and practices of China's GDP and finally increase the data quality.