Which of the following methods of empirical keying has been the most popular and useful?
A)vertical percentage
B)horizontal percentage
C)deviant response
D)optimum range

Question

Quizplus · Accepted Answer

Vertical percentage has been widely used and is considered to be one of the most effective methods of empirical keying. This method involves comparing the percentage of correct responses on one item by those who score high and low on the overall test. By analyzing the differences in percentages, items that discriminate between the two groups can be identified and used to develop a reliable test.

Which of the Following Methods of Empirical Keying Has Been