Tracing of transmission assembly quality based on rank-sum test

In order to realize the tracing of transmission assembly quality and to improve the ability to transform data information into decision information, according to the characteristics of raw data, the method of tracing quality based on rank-sum test is proposed, and the procedure to adopt the method of rank-sum test is offered in this thesis. Test conclusion provides scientific grounds for the diagnosis of quality problems. The experiment results show that this method of tracing is effective in the application of tracing of transmission assembly quality.