Revista Electrónica de Investigación Educativa (May 2000)
The Level of Difficulty and Discrimination Power of the Basic Knowledge and Skills Examination (EXHCOBA).
Abstract
The Basic Knowledge and Skills Examination (EXHCOBA) is one of the few great-scale examinations in Mexico which has been publishing its psychometric parameters. In this paper we describe the item analysis results, regarding the exam’s difficulty level and discrimination power. Results show that most of the items have a medium difficulty and a high discrimination power. They also reveal that the mathematics items have better discrimination power levels than the ones which belong to social science.