An Automatic Quantification of the Randomness of Answering Correctly in Taking Traditional Multiple-choice Tests

Abstract

In taking traditional multiple-choice tests, random guessing is unavoidable yet nonnegligible. To uncover the “unfairness” caused by random guessing, this paper designed a Microsoft Excel template with the use of relevant functions to automatically quantify the probability of answering correctly at random, eventually figuring out the least scores a testee should get to pass a traditional multiple-choice test with different probabilities of answering correctly at random and the “luckiness” for passing it. This paper concludes that, although random guessing is nonnegligible, it is unnecessary to remove traditional multiple-choice items from all testing activities, because it can be controlled through changing the passing score and the number of options or reducing its percentage in a test.