Al-Mawan, Nuran Medhat, El-Houssainy Rady, and Nasr Rashwan. “Median Double Ranked Set Sampling Method”. JOURNAL OF ADVANCES IN MATHEMATICS 14, no. 1 (March 30, 2018): 7503–7512. Accessed May 18, 2024. https://www.rajpub.com/index.php/jam/article/view/7173.