Accuracy of Estimate of the items and the ability parameters according to the two parameters Logistic model for TIMSS 2019 Test for the science subject for the second intermediate class in Kingdom of Saudi Arabia

Abstract

The study aimed to disclose the Accuracy of Estimate of the difficulty and distinction parameter for the item and the ability for TIMSS Test for the science subject for the second intermediate class in Kingdom of Saudi Arabia according to the two parameter Logistic model for the theory of item responding. To achieve the aim of the study, the researcher used the descriptive analysis approach. She has used the data of TIMSS 2019 Test for the science subject for a sample of 5680 male and female student. They were chosen randomly from 209 school in Kingdom of Saudi Arabia. The statistical programs SPSS and BILOG- MG3 were used to analyze the data. The results showed that: the values of the difficulty parameter ranges between (1.79 –) to (4.04) with Arithmetic average (0.42). it showed that the minimum value of the standard error in assessing the difficulty parameter which reached (0.098). the difficulty of the item value reached (- 0.69), the value of the distinction parameter ranged between (0.38) to (1.50) with Arithmetic average (0.85). The minimum value of the standard error in assessing the distinction parameter which reached (0.09). the distinction of the item value reached (0.38). As for the values of assessing the ability for the individuals in the test, it ranged between (- 3.610) to (4) with Arithmetic average (0.03). The minimum value of the standard error reached (0.49) at assessing the ability (-0.58). the study concluded many recommendations, including: establishing the training courses and workshops for male and female teachers in building the tests items according to the levels of TIMSS test, engaging the teachers in the workshops which are established by the education ministry to discuss TIMSS results and making more researches concerning TIMSS test by using the other models for the respond theory for the item.