common variation1 #13 데이터 만들기 Part 1 - Control Chart In This Chapter ▶ Creating and using a control chart ▶ Looking at different ways to display data Recognizing the importance of Control Charts Real Story] Walter Shewhart, who felt that business wasted too much time confusing the types of variation and taking inappropriate action, developed control charts in the 1920s. Shewhart envisaged the control chart as a way to simplify identification of de.. 2021. 4. 8. 이전 1 다음
