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It aids in detecting specific technical flaws and thus provides information for improving test item.
It provide useful information for class discussion of the test, e.g. easy item can be skipped over and treated lightly, answers to difficult items can be explained in detail and items be pointed out to the students rather than defended as fair.
It provides data for helping the students to improve their learning. The frequency with which incorrect answer is chosen reveals common errors and misconception which provides a focus for remedial work.
It provides insight in skills which lead to preparation of better test in future
The questions with item difficulty 50 – 60% are considered good, 30 – 70% is acceptable and those with index above 70% or below 30% require modification.
The questions with discrimination index 0.35 and above are consider excellent, 0.25 to 0.34 good, 0.20 to 0.24 acceptable and those below 0.20 require modification.
# denotes the answer Sem. Date Group Size Of Group Chosen Answer Diff. Index (P) Discr. Index (d) A #B C D NR * 4 20/1/2009 HIGH 30 2 20 5 3 0 LOW 30 8 3 1 18 0
# denotes the answer Sem. Date Group Size Of Group Chosen Answer Diff. Index (P) Discr. Index (d) A #B C D NR * 4 20/1/2009 HIGH 30 2 20 5 3 0 38 0.56 LOW 30 8 3 1 18 0
Smt. B. K. Shah Medical Institution and Research Center, Piparia Department of Community Medicine QUESTION BANK CARD (SPECIMEN) Reference: SUBJECT National health days Objective/s tested Awareness about national health days Que. No. … … … (Stem) World Health day is observed on Alternatives: A. 1 st December B. 7 th April C. 1 st July D. 7 th September