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It happens when a number of students in the upper and lower group who answer the test correctly are equal the item cannot distinguished the students who performed in the overall…

It happens when a number of students in the upper and lower group who answer the test correctly are equal the item cannot distinguished the students who performed in the overall…
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It happens when a number of students in the upper and lower group who answer the test correctly are equal the item cannot distinguished the students who performed in the overall test and the students whose performance are very poor.

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User Jaron Thatcher
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SIs that a question?

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User N Alex
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