Multiple Choice
On a reading comprehension exam,the proportion of examinees in the top group that answered item 5 correctly equaled 0.70 and the proportion of examinees in the bottom group that answered item 5 correctly equaled 0.10.What is the discrimination index for item 5?
A) 0.36
B) 0.49
C) 0.60
D) 0.80
Correct Answer:
Verified
Correct Answer:
Verified
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