Instructional Design Quiz Summary and Question Breakdown

Canvas quiz statistics provide a summary of the overall class performance and and individual question breakdown.

Class Performance Summary

1 - Average Score: Central quiz score

2 - High and Low Score: Range of student scores

3 - Standard Deviation: Spread from the average score

4 - Average Time: Central duration of time to complete the quiz

5 - Visual representation: Quiz score frequencies

Quiz Summary Graphic.png

Question Breakdown

Quiz Question Breakdown Graphic-2.png

1 - Attempts: Number of students who attempted this problem

2 - Question: Displayed question verbatim

3 - Possible Answers: Frequency of correct and incorrect answers

4 - Discrimination Index: Differentiates between students correctly answering the question

Discrimination Index

The calculation is a correlation between the top / middle / bottom performing students who answered the question correctly. The top / middle / bottom performing students are automatically sorted based on their total quiz score: the top 27%, the middle 46%, and the bottom 27%.

Anything above +0.24 is considered to have a good discrimination index. A good discrimination index is a question that the top / middle performing students answered correctly while the low performing students did not answer correctly. A discrimination index of 0 is considered neutral because all students answered the question correctly. If your discrimination index is red (less than +0.24), consider revising the question and / or possible answers.

The image below is a representation of how the discrimination is calculated based on students either answering correctly or incorrectly.

Discrimination Index Represenation-1.png

5 - Difficulty Index: Percentage of students who answered the question correctly