CONFIDENCE-INTERVALS FOR THE PROPORTION OF MASTERY IN CRITERION-REFERENCED MEASUREMENT

A relatively simple method is developed to obtain confidence intervals for a student's proportion of domain mastery in criterion-referenced or mastery measurement situations. The method uses the binomial distri bution as a model for the student's scores under hypothetically repeat ed assessments. Though the use of this model is not a new idea, the me thod of implementation has not been proposed previously. The technique makes use of widely available F tables and hence does not require ela borate computer equipment or proprietary computer programs.