The Research On Controlling Sampling Error Of Road Transportation Volume

Road transportation volume is a manifestation of road transport capacity and an important indicator of national strength conditions. With road transport status in an integrated transport system in the country increased continuously, national and local transportation management departments at all levels pay more and more attention to road transportation data collection and obtain work. The special investigation of National Highway transportation in 2008 and the special investigation of economic statistics of the transportation industry in 2013 have achieved great success, further demonstrates the importance of road transportation volume sampling methods. In road transportation volume data collection, using scientific sampling methods and controlling sampling error reasonably, you can quickly and easily obtain objective and accurate data,and improve efficiency in transportation volume survey and provide a theoretical basis for trade decisions.Firstly,with special investigation of national highway transportation in 2008 and special investigation of economic statistics of transportation industry in 2013 as the background, briefly discusses the related theories of sampling error for road transportation volume, put forward the importance of controlling sampling error for improving road transportation volume sampling method and obtaining effective road transportation volume data.Secondly, the paper presents the specific method of controlling sampling error of road transportation volume in the theoretical level, combined with data analysis in-depth study. With determining the sample size reasonably,improving sampling method, and determining fluctuation coefficient reasonably, we can control the sampling error effectively and improve the sampling method. Put forward new sampling method that double sampling method combined with sample rotation technique, using the monthly basic data combined with fluctuation coefficient estimates the annual non-survey data monthly.Finally, based on the above theoretical analysis, put forward the safeguards of road transportation sampling surveys from a practical perspective. With legal protection, technical support, personnel security, data reporting safeguard,the controlling of transportation sampling error may have more practical significance.