eng Science and Education Publishing American Journal of Educational Research 2333-4770 2015-01-13 3 1 49 53 10.12691/education-3-1-10 EDUCATION20153110 article Gaguk Margono gmargono@unj.ac.id 1 Engineering Department, State University of Jakarta, Indonesia, Kampus UNJ, Jl. Rawamangun Muka, Rawamangun, Jakarta The purpose of this paper is to compare multidimensional and unidimensional reliability of instrument of students' attitude towards statisticsby using semantic differential scale. Few researches utilized multidimensional reliability measurement. Multidimensional reliability is calculated by using Confirmatory Factor Analysis (CFA) in Structural Equation Model (SEM) technique. The measurement and calculation described in this article deal with instrument of students' attitude towards statistics.This instrument has been tried out to 150 students. It is found that multidimensional reliability has higher accuracy compared to the unidimensional one. Perhaps various formulas applying multidimensional reliability would be used in future research. http://pubs.sciepub.com/education/3/1/10/education-3-1-10.pdf multidimensional reliability attitudes toward statistics using semantic differential scale confirmatory factor analysis