ABSTRACT
Ikebukuro's index is identical to the index described by Nukada in 1978. Nukada's index has not been used because it is not realistic or useful. Because a “ standard score rate” can be calculated from the weighted average of Nukada's index, Ikebukuro's index is also closely related to the “ standard score rate.”
ABSTRACT
It is well known that even examinees with incomplete knowledge can figure out the correct answer on an objective test. The Examination Committee of the Ministry of Health concluded that objective tests using answer code (K type questions) can not adequately evaluate an examinee's knowledge. For this reason, the Committee recommended using X2 or X3 type questions on the national board examination instead of K type questions. The X2 type question is a multiple true-false method of testing with 2 true and 3 false items.<BR>I believe that the Committee has been mislead, since the X2 type question is really a test with ten answer codes, and an examinee with incomplete knowledge can still figure out the correct answer for it.
ABSTRACT
The X2 type question consists of a multiple true-false method of testing, with 2 true and 3 false items. Its standard score rate is 56.6%, and its accidental score rate is 10%. Since the standard score rate of the present national board examination is almost 71%, the number of unsuccessful examinees will increase when the X2 type question is used while maintaining the same passing mark. Quantitative analysis shows that the score rate of X2 type questions is determined mostly by correct thinking on the most difficult true item and the most difficult false item. These results are important to the development of future examinations using X2 type questions.