Imasuen K, Adeosun PK. APPLICATION OF GENERALIZABILITY THEORY IN ESTIMATING ITEM DIFFICULTY OF THE WEST AFRICA EXAMINATION COUNCIL 2021 SENIOR SECONDARY SCHOOL MATHEMATICS MULTIPLE-CHOICE ITEMS IN EDO SOUTH SENATORIAL DISTRICT, EDO STATE. JOSTMP [Internet]. 2024 Dec. 3 [cited 2024 Dec. 22];2(2):137-52. Available from: https://jostmp-ksu.com.ng/index.php/jostmp/article/view/158