Final Flashcards
item-level analysis
Selected-response items
Constructed-response items
Performance tasks
test-level analysis
Scores from tests and quizzes
Homework marks
Performance assessment marks
item difficulty
how many students are able to answer the question correctly
easy items
p higher than 0.9
p value (selected response)
proportion of items that are correct. Number of correct answers/number of students taking the test
difficult items
p lower than 0.5
moderate items
p between 0.5 and 0.9
p value (constructed response)
sum of marks on the item/ (number of students) x (Max possible mark on the item)
high discrimination
over 0.2
item discrimination
Whether an item can distinguish low achieving students and high achieving students
Discrimination equation
(number of correct answers/upper group) - (Number of correct answers/lower group)
distractor functioning
distractors are incorrect response options.
Developing high-quality (e.g., plausible) distractors can be a challenging task
low discrimination
under 0.2
reliability
indicates whether an assessment can give consistent
results for students
summative reliability
between 0.8 and 0.9