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Title: Методика комплексного оцінювання якості тестів. Частина 1
Other Titles: The method for comprehensive quality evaluation of tests. Part 1
Authors: Кухаренко, Володимир Миколайович
Перхун, Л. П.
Товмаченко, Н. М.
Keywords: дистанційне навчання; тестові завдання; валідність; кореляція; факторний аналіз; distance training; test task; validity; correlation; factor analysis
Issue Date: 2018
Publisher: Державна служба статистики України
Національна академія статистики, обліку та аудиту
Національна академія державного управління при Президентові України
Citation: Кухаренко В. М. Методика комплексного оцінювання якості тестів. Частина 1 / В. М. Кухаренко, Л. П. Перхун, Н. М. Товмаченко // Статистика України. – 2018. – № 3. – С. 40-48.
Abstract: Розпочато виклад методики комплексного оцінювання якості тестів, що поєднує класичну теорію, методи Data Mining та Item Response Theory. Проведено факторний та кореляційно-регресійний аналіз. Використано показники описової статистики, точково-бісеріальний коефіцієнт кореляції, коефіцієнт кореляції Пірсона для бінарних змінних. Показана відмінність у тлумаченні результатів розрахунків для нормативно орієнтованих і критеріально орієнтованих тестів.
Informatization of the modern society has led to the wide-scale and rapid introduction of distance training technologies in virtually all the categories of Ukrainian HEEs. Studies of the aspects related to applications of digital technologies in education processes are subject to close attention in Ukraine and beyond . An important component of the training process is test control of knowledge. Education activities at the National Academy of Statistics, Accounting and Audit rely on criteria oriented tests. They are realized on the basis of distance training system Moodle that allows for creating test questions of various types and their repeated inclusion in various packages of test tasks. The Moodle environment allows for computation of selected statistical indicators on a fulfilled test and its individual tasks: average estimate and median, standard deviation, asymmetry, excess, internal agreement rate, standard error etc. However, these characteristics are not enough for justified acceptance of test results. The article presents the first phase in elaborating a comprehensive method for quality evaluation of selected test tasks and the test as a whole. This method combining the classical theory, Data Mining and Item Response theory methods involves six steps. The first step, based on indicators of descriptive statistics, allows for evaluating the obtained distribution of test results. The second step involves evaluation of the validity of test tasks. The point-bead ratio is computed to derive the correlation between individual test task and individual test score of a student, with values higher than 0.5 considered satisfactory. Pearson correlation coefficient for binary variables shows the correlation between pairs of test tasks. The test tasks with negative correlations with the other test tasks are not considered as valid, and they have to be corrected or replaced. At the third step, the factor validity of the test is evaluated. The test tasks combined in groups using factor analysis methods are subject to further analysis to determine their impact on the final result, the individual test score of a student. All the above mentioned steps are illustrated by example. The computation is made by SPSS software package. The difference in interpretation of the computation results in each step for norm oriented and criteria oriented tests is demonstrated. The description of further steps involves in the method for comprehensive quality evaluation of tests, which use Data Mining and Item Response Theory methods, will be continued in next publications.
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