It is needed to calculate the item-validity index.It is
A) the point-biserial correlation between the item score and the criterion score.
B) the mean of the item-score distribution.
C) the item-score standard deviation.
D) All of these
Correct Answer:
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A) high scorers'
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A)
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Q58: The item-validity index is key in determining
A)
Q59: Which statement is TRUE regarding an item-discrimination
Q60: The greater the magnitude of the item-discrimination
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