ITEM ANALYSIS FOR DICHOTOMOUS ITEM RESPONSE THEORY : AN APPLICATION OF R PROGRAMMING

Abstract

                    R program is a computer program that is capable of statistical analysis. It can be used in a variety of ways such as presenting in graphical form and is open source software that all users can access it free of charge. This program has played a huge role in education and research fields. This article collects packages and instructions in the RStudio program used for                     the analysis of dichotomous item response theory. The article is divided into 6 parts, which consist of program installation, basic use of R program, data file preparation, importing data, installing and running the package, item analysis procedure, display of analysis results, display of information by graphs, and interpretation of results. Moreover, it also includes an example of all steps about analyzing dichotomously scored items by using the test response theory that displays both the analysis results and the interpretation of results, which can be used to analyze exams in the education field more easily.