چکیده:
A standard correction for random guessing (cfg) formula on multiple-choice and Yes/No examinations was examined retrospectively in the scores of the intermediate female EFL learners in an English language school. The correction was a weighting formula for points awarded for correct answers, incorrect answers, and unanswered questions so that the expected value of the increase in test score due to guessing was zero. The researcher compared uncorrected and corrected scores on examinations using multiple-choice and Yes/No formats. These short-answer formats eliminated or at least greatly reduced the potential for guessing the correct answer. The expectation for students to improve their grade by guessing on multiple-choice and Yes/No format examinations is well known. The researcher examined a method for correcting for random guessing (cfg) quot; no knowledgequot; on multiple- choice and Yes/No vocabulary examinations by comparing application and non-application of correction for guessing (cfg) formula on scores on these examinations. It was done to determine whether the test takers really knew the correct answer, or they had resorted to a kind of guessing. This study represented a unique opportunity to compare scores from multiple-choice and Yes/No examinations in a setting in which students were given the same number of questions in each of the two format types testing their knowledge over the same subject matter. The results of this study indicated that the significant differences were highlighted between the subjects' scores when cfg formula was applied and when it was not.
خلاصه ماشینی:
"The Impact of Correction for Guessing Formula on MC and Yes/No Vocabulary Tests' Scores Abdollah Baradaran Islamic Azad University Tehran Central Branch Sdeideh Ahanghari 1 Shokouh Rashvand Semiari Islamic Azad University, Tabriz Branch A standard correction for random guessing (cfg) formula on multiple-choice and Yes/No examinations was examined retrospectively in the scores of the intermediate female EFL learners in an English language school.
The correction for guessing formula (cfg) applied to the raw scores of the multiple choice (MC) and Yes/No items is widely used in the field of language testing: Yes/No format, since, as Jones (2006, p.
It has been attempted in this paper to determine whether the correction for guessing formula (cfg), which might be used for multiple-choice and Yes/No items, can lead to different results; that is, different test scores once the formula is applied and once it is not applied.
Results and Discussion This study was concerned with one main research question: Does the correction for guessing formula (cfg) have any significant impact on the results of MC and Yes/No vocabulary tests?
Concerning the above research question, the following null hypothesis was proposed: the correction for guessing formula (cfg) has no impact on MC and Yes/No vocabulary test scores.
The null hypothesis for the main research question was that there is no significant difference between MC and Yes/No vocabulary test scores when the correction for guessing formula is applied and when it is not applied."