EXECUTION TIME AS A FACTOR OF THE TEST TASK QUALITY

摘要

Influence of the test tasks characteristics on the test results quality is researched with author’s method of computational experiments. This method is based on statistical tests and G. Rasch model. Criterion of the test results quality as the difference of probabilities of correct and incorrect ranking of the examinees is proposed. The dependence of this criterion on the discrimination parameter and the number of test items is studied according to the results of numerical experiments. The empirical function for the approximation of this data is suggested and used to propose the quality criterion that takes into account the duration of the item execution and the discrimination parameter of this item.