Author = Muhammad A.
An improved and robust class of variance estimator

Volume 28, Issue 6, November and December 2021, Pages 3589-3601

10.24200/sci.2020.52986.2986

M. Abid; R. A. Kh. Sherwani; M. Tahir; H. Z. Nazir; M. Riaz


An efficient mixed-memory-type control chart for normal and non-normal processes

Volume 28, Issue 3, May and June 2021, Pages 1736-1749

10.24200/sci.2019.51437.2177

H. Z. Nazir; M. Abid; N. Akhtar; M. Riaz; S. Qamar


Improved Ratio Estimators of Variance Based on Robust Measures

Volume 26, Issue 4, July and August 2019, Pages 2484-2494

10.24200/sci.2018.20604

M. Abid; S. Ahmed; M. Tahir; H. Zafar Nazir; M. Riaz