By viewing the rank correlation insights of an assignment, you can see if the question correlates well compared to the whole assignment.
To view insights into the rank correlation, follow the steps below.
- Click the domain School name in the menu on the left.
- Click label_importantCourses in the menu at the top.
- Select your course or use the search bar.
- Select your assignment or use the search bar.
- Click analytics Insights in the menu at the top.
- Click Rank correlation in the menu on the left.
How we determine the rank correlation
For the rank correlation, we sort participants of the assignment by their final mark and divide them into 5 groups. We then show the average score of each group for that specific question.
If the line in the graph is roughly horizontal, it means that the question was answered just as well by the overall higher-scoring participants as by the overall lower-scoring participants.
If the line is more ascending, it means that the overall higher scoring participants answered this question better than the overall lower scoring participants, as you would expect for most questions.
- Y-axis: Normalised average score
The normalised average score contains the score of the question on a scale from 0 to 1.
- X-axis: Quintile group
For the quintile groups, the participants are sorted by their final mark for the assignment and divided into 5 groups. Quintile 1 contains the 20% of participants with the lowest marks and quintile 5 contains the 20% of participants with the highest marks.
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