Maryam, Dr Misbah Nosheen, Shehzad Ahmad, Dr Sadia Naz. ORDINARY LEAST SQUARES (OLS) METHODS AND ISSUES: THEORETICAL FOUNDATIONS, CHALLENGES, AND METHODOLOGICAL REMEDIES. pjssr [Internet]. 2025 Jun. 21 [cited 2025 Jun. 29];4(2):1-9. Available from: http://pjssr.com.pk/index.php/Journal/article/view/22