A Study on the Comparison of Production Activity Using Work Sampling Method of Two Periods After/Before Process Change

공정변화전과 후 두기간에서의 워크.샘플링법에 의한 생산활동 비교에 관한 연구

This thesis deals with the method of Work Sampling to compare production activity due to change of productivity, workmen's productivity environment, nonproductivity of machine and plant when there is a process before and after change of work environments. So, this study takes $x^2$ - test to discover significant change of process, and obtains Proper observation number due to ratio difference-test over change of productivity before and after process change. Therefore, this thesis represent statistically effective results between two periods before and after process change.