An item analysis splits the "Upper" and "Lower" groups into the top and bottom 50% of cases. Here are the item statistics for four items (21, 22, 23, and 24).
Which item has the highest discrimination value?

Question

An item analysis splits the "Upper" and "Lower" groups into the top and bottom 50% of cases. Here are the item statistics for four items (21, 22, 23, and 24).
 Which item has the highest discrimination value?

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The Answer of An item analysis splits the "Upper" and "Lower" groups into the top and bottom 50% of cases. Here are the item statistics for four items (21, 22, 23, and 24).
 Which item has the highest discrimination value?

An Item Analysis Splits the "Upper" and "Lower" Groups into the Top