Tari, C. V., D. I. Yakoko, and I. Ayuba. “Mathematical Interpretation of students’ Indices of Performance and Its Implications on students’ Performance in the Award of Certificate at Nigerian Tertiary Institutions”. Journal of Educational Research in Developing Areas, vol. 3, no. 2, June 2022, pp. 197-11, doi:10.47434/JEREDA.3.2.2022.197.