Dlshad Mahmood Saleh, and Dashty Ismil Jamil. “Construction X-Bar Chart for Quality Control Using of Robust (MAD) Estimator in Under Consideration Is Outlier With An Application”. QALAAI ZANIST JOURNAL 6, no. 3 (September 30, 2021): 575–588. Accessed November 21, 2024. https://journal.lfu.edu.krd/ojs/index.php/qzj/article/view/704.