المقارنة بين ثلاث طرائق في تقدير ثبات الاختبارات المركبة التي تتضمن نوعين من الفقرات (ألفا، ألفا الطبقي، راجو)‎

Abstract EN

This study aimed to compare between three methods to estimate the reliability of the tests that include two types of items using (alpha, stratified alpha, Raju) methods which used in the estimation of congeneric tests reliability.

A data of 84 final test prepared by faculty members at the Jadara University selected randomly from the undergraduate courses at the second semester 2014/2015 was used.

The Respondents to each test were on average about 30 students, and the average number of items was about 13 and each test consisted of two types (multiple choice and essay items).

The results indicated that the mean of the estimates reliability reached (0.71) (0.79) (0.53) according to equation Alpha, Stratified Alpha and Raju respectively.

ANOVA, Chi-squared test results also indicated statistically significant differences between distributions of reliability coefficients with Contingency coefficient 0.36.