The confidence of measurement results is important in native and foreign. Although the measurement uncertainty is used for confidence of measurement results, but it is difficult to confirm that there are the errors in the measurement methods and bias ...
The confidence of measurement results is important in native and foreign. Although the measurement uncertainty is used for confidence of measurement results, but it is difficult to confirm that there are the errors in the measurement methods and bias in the measurement results continuously. It is difficult to solve these problems, because there is no proficiency testing in LED display field. The coordinator of proficiency testing should consider homogeneity, stability, assigned value, standard deviation and performance statistics to realize the purpose of proficiency testing. The regression analysis is suggested for stability evaluation of artifact in this thesis. The relations between time and measurement results could be identified by regression analysis.