An item analysis yields the following results for a multiple-choice item (alternative A is the correct answer): Number of students in the upper and lower scoring groups on the total test choosing each alternative.
Alternative A* B C D Omit Total
Upper Group 3 1 5 1 0 10
Lower Group 6 2 0 1 1 10
Which one of the following statements is NOT justified by these results?
A)The item should be reviewed for possible miskeying.
B)The item has negative discrimination.
C)The item has a difficulty of 45%.
D)The item is invalid.

Question

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The Answer of An item analysis yields the following results for a multiple-choice item (alternative A is the correct answer): Number of students in the upper and lower scoring groups on the total test choosing each alternative.
Alternative A* B C D Omit Total
Upper Group 3 1 5 1 0 10
Lower Group 6 2 0 1 1 10
Which one of the following statements is NOT justified by these results?
A)The item should be reviewed for possible miskeying.
B)The item has negative discrimination.
C)The item has a difficulty of 45%.
D)The item is invalid.

An Item Analysis Yields the Following Results for a Multiple-Choice