Fifteen people in a upper group consisting of 25 people get an item right and 5 people in a lower group of 25 people get the item wrong. The item has a difficulty index of __________ and a discrimination index of __________.
A) .40, .20
B) .40, .40
C) .60, .20
D) .80, .40

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The Answer of Fifteen people in a upper group consisting of 25 people get an item right and 5 people in a lower group of 25 people get the item wrong. The item has a difficulty index of __________ and a discrimination index of __________.
A) .40, .20
B) .40, .40
C) .60, .20
D) .80, .40

Fifteen People in a Upper Group Consisting of 25 People