الكشف عن القيم الشاذة و اساليب التعامل معها و تأثيرها على دقة تقدير معالم الفقرات وفقا للأنموذج ثنائي المعلم

Abstract EN

This study aimed to reveal anomalous values and methods of dealing with them and their impact on the accuracy of estimating the parameters of the paragraphs according to the two-teacher model, and the researcher relied on the graphical inference test prepared by the Assmentday Foundation specialized in issuing various psychological tests in Britain in 2012.

So the researcher translated the tool from its English language into Arabic and then performed a reverse translation, and the test was presented to an expert in the Arabic language to ensure the linguistic integrity of the test, and after completing the translation validation procedures, the test was presented to (10) specialists in educational and psychological sciences, and no one was excluded.

One of the test items for obtaining an agreement rate of (100% ), thus verifying the descriptive validity of the test.

The test was applied to a sample of (400) students selected in a random stratified method in a proportional manner.

The statistical analysis of the items was performed according to the theory of responding to the paragraph by dependence On the binary model in analyzing the items of the tool using the statistical program ((Bilog-mg3), no item was excluded from the test by the program, and it was found that all the test items matched the model used.

High anomalous values and (21) anomalous and low values as they were detected using the standard degree method, and then the researcher dealt with these values in three methods: (preservation, deletion, and replacement).

By replacing the values using the amputated mean method, then he analyzed the data for each of them to extract the accuracy of the parameters of the paragraphs, and the results showed that there is no difference in the standard error of the difficulty parameter between the three methods (preservation, deletion, and replacement), as for the standard error of the distinction parameter, there is a difference between the methods.

The three (keep, delete, and replace) favor the deletion method.

In light of the results of the current research, the researcher came to some conclusions, recommendations and suggestions.