Ten students took a 6-item grammar test and scored between 2-6 points. Their scores are listed from highest to lowest with the top five students in the upper half and bottom five in the lower half. The table provides each student's score on each item to calculate the facility and discrimination indices for analyzing the test questions.

1. Item Analysis Format
Ten students have taken an objective test. The grammar section contained 6 objective
items. In the table below, the students’ scores have been listed from high to low. There are
five students in the upper half and five students in the lower half (Marisol, Pedro, Ana,
Juan, and Luisa are in the upper half). Remember that the number“1” indicates a correct
answer on the question; a “0” indicates an incorrect answer.
No. Student Name Total Score
Items
1 2 3 4 5 6
1 Marisol 6 1 1 1 1 1 1
2 Pedro 5 1 1 0 1 1 1
3 Ana 5 0 1 1 1 1 1
4 Juan 4 0 1 0 1 1 1
5 Luisa 4 0 1 0 1 1 1
6 Miguel 3 0 1 0 0 1 1
7 Susana 3 1 1 0 1 0 0
8 Elena 2 1 1 0 0 0 0
9 Jorge 2 1 1 0 0 0 0
1
0
María 2 1 0 0 0 0 1
Calculate the Facility Index (F) and the Discrimination Index (D) for each question.
Item # Correct (Upper
half)
# Correct
(Lower half)
Facility (F) Discrimination (D)
Item 1
Item 2
Item 3
Item 4
Item 5
Item 6
Item 7
Item 8
Item 9
Item 10
Answer the following questions:
1. Which question was the easiest?
2. Which question was the most difficult?
3. Which item has the poorest discrimination?
4. Which questions would you eliminate first (if any) – why?