Hawkar Qasim Birdawod., Dashty Ismil Jamil, Dlshad Mahmood Saleh. Comparison of Efficiency and Sensitively between (Three Sigma, Six Sigma and Median Absolute Deviation) by using Xbar Control Chart. QZJ [Internet]. 2021Jan.24 [cited 2024May20];3(2):803-12. Available from: https://journal.lfu.edu.krd/ojs/index.php/qzj/article/view/561