Which one of the following statistics can be used to make decisions about retaining or discarding an item based on how well the item discriminates between high- and low-scoring test takers?
A) item-total correlation
B) inter-item correlation
C) difficulty level
D) discrimination index

Question

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The Answer of Which one of the following statistics can be used to make decisions about retaining or discarding an item based on how well the item discriminates between high- and low-scoring test takers?
A) item-total correlation
B) inter-item correlation
C) difficulty level
D) discrimination index

Which One of the Following Statistics Can Be Used to Make