EDUCATION UGC NET
SCHOOL AND CLASSROOM MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Reliability
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Objectivity
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Ease or difficulty
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Discrimination power
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Detailed explanation-1: -The facility index provides information about the difficulty of the question and is represented as the percentage of students answering the question correctly.
Detailed explanation-2: -For items with one correct alternative worth a single point, the item difficulty is simply the percentage of students who answer an item correctly. In this case, it is also equal to the item mean. The item difficulty index ranges from 0 to 100; the higher the value, the easier the question.
Detailed explanation-3: -It is calculated using the formula P=R/T, where P is the item difficulty index, R is the number of correct responses and T is the total number of responses (which includes both correct and incorrect responses).
Detailed explanation-4: -Item difficulty is the percentage of learners who answered an item correctly and ranges from 0.0 to 1.0. The closer the difficulty of an item approaches to zero, the more difficult that item is. The discrimination index of an item is the ability to distinguish high and low scoring learners.