Psychometric Categories
This psychometric determines the overall difficulty of an exam item.
What is Item Difficulty or P Value?
A P-Value of 15%
What is a difficult item?
How the Point Biserial is calculated?
What is by ExamSoft software program?
Action taken when a distractor is higher than the key.
What is examine the question and consider crediting points?
A difficulty score of 85%
What is an difficult item?
A P-Value score of 85%
What is a easy item?
Interpretation of a Point biserial item rated at 0.50
What is a very good point biserial?
Action taken when 2 distractors are zero (0).
What is adjust the question distractors for the next item use?
This psychometric discriminates between low and high performing students.
What is a point biserial?
P-value item should be discarded per ULM policy.
What is a P-value item less than 30%?
Interpretation of an item with a point biserial of 0.04
What is a poor item?
Action taken when a distractor is a higher number than the key.
What is examine the test question and consider adjusting score?
The psychometric rates the overall exam based on consistency, performance, and difficulty of all test items.
What is Kuder-Richardson formula (KR-20)?
P-value item is 85%
What is keeping the item?
The point biserial compares the upper 27% scoring students from this set of students.
What is the lower 27%
Action taken when distractors are 5 points less than the key.
What is leave score/item as is?
An Index Discrimination Score of 1.0
What is perfect discrimination?
P-value item is 21%
What is discard the item and apply full credit?
Interpretation of a test item with a point biserial of 0.18
What is a marginal item?
Action taken for an item with a difficulty index is 20% and distractor 10 points higher than the key.
What is examining and considering discarding the question and crediting points for the question?