Internal Consistency Reliability Of Instruments Measuring Students Satisfaction As An Internal Customer (Application Of Factor Analysis)

Reliability is consistency of the instrument in measurement whatever it measures. There are different methods available for estimating internal consistency reliability base on a single administration of a given assessment. Measures of internal consistency are a popular set of assessments with Cronbach’s alpha () being the most favored. Two other measures of internal consistency, such as theta (Θ) and omega (Ω). Each of three measures and its computation is described using instrument for measuring students’ satisfaction as internal customer. Students’ satisfaction is the level of a student’s felt state resulting from comparing a product’s perceived performance (outcome) in relations to the student’s expectation. The purpose of this study to answer which of the three measures a highest one? The research was survey research using simple random sampling methods. The instrument was based on the definition above and it was tried out to 103 Post Graduate students’ State University of Jakarta (Universitas Negeri Jakarta). Because alpha () is a lower bound reliability assessment so this research the following holds < Θ < Ω for this instrument. It can be concluded that the questionnaire measuring students’ satisfaction has appropriate internal consistency reliability. Further try out is still needed to standardize the instrument. Key words: internal consistency reliability , Θ, and Ω, students’ satisfaction as an internal custome

Compiling the national accounts demystified

This paper unveils the mystery of national accounts statistics. National accounts statistics are not facts. They are estimates of a universal accounting model (SNA93) for describing, analyzing and managing national economies. The operational versions of the universal model decide what is actually estimated. They are estimated by expanding and transforming the available data with accounting identities, tested and untested assumptions and previous estimates. The estimates reflect skills, resources and compilation policy. The resulting differences in the reliability of the national accounts statistics are to a great extent the price to be paid for a miracle come true: all over the world, very incomplete, imperfect, heterogeneous and partly outdated data are to be transformed into complete, consistent, internationally standardized and up-to-date overviews of the national economies and their major components. Nevertheless, compiling the national accounts can be improved in various ways, but this requires an international long-term strategy.National accounts; data compilation; reliability of national accounts statistics; measurement in economics