Once I publish a quiz, what kinds of quiz statistics are available?
You can view quiz statistics for quizzes that have been published and have at least one submission. You can also download comma separate value (CSV) files to view Student Analysis or Item Analysis for each quiz question. For more detailed information about item analysis limitations and calculations, please refer to the Item Analysis PDF.
For optimum course performance in the Canvas interface, quiz statistics are only valid for quizzes under 100 questions or 1000 attempts. For instance, a quiz with 200 questions will not generate quiz statistics. However, a quiz with 75 questions will generate quiz statistics until the quiz has reached 1000 attempts. Results greater than these maximum values can be viewed by downloading the Student Analysis report and viewing the CSV file.
Open Quiz Statistics
By default, the quiz summary shows statistics for all sections including the quiz average score, high score, low score, standard deviation (how far the values are spread across the entire score range), and average time of quiz completion . To view quiz statistics for a section, click the Section Filter drop-down menu . Note that you can only view the first 10 sections of your course. To access additional Survey results, generate a Student/Item Analysis report.
In the summary graph , the x-axis indicates the quiz scored percentages, and the y-axis indicates the number of students who received each percentage.
If a student had multiple assignment attempts, you can view past attempts in SpeedGrader. Quiz stats will only display the kept score for the student (highest score or latest score). To view the score setting for multiple attempts, edit your quiz and view the multiple attempts settings option. If necessary, you can give your students an extra attempt.
View Analysis Reports
When instructors generate an analysis report, Canvas shows the last time the report was generated. If there is an error with the report, instructors can retry the option or cancel the analysis completely.
Download csv files to view Student Analysis or Item Analysis for each quiz question to count all student attempts in the statistics. For more detailed information about item analysis limitations and calculations, please refer to the Quiz Item Analysis PDF.
View Question Breakdown
Quiz question shows the total percentage of students who answered the quiz question correctly .
Each question includes a breakdown with each question answer choice. Correct answer response(s) are shown in a green bar with a check mark ; incorrect responses are shown in a black bar . Question types that do not have set answer choices, such as as Fill-in-the-Blank questions, display entries other than the correct answer in a black striped bar . The horizontal bars are scaled according to the answer response percentage .
Each response also displays the number of respondents who selected the answer . To view the names of the students who selected a answer choice, click the [x respondents] link.
View Manually Graded Questions
Quiz statistics also show relative grade performance for manually graded essay and file upload quiz question types. Manually graded question types are shown in the same table format as other quiz types.
A manually graded quiz type is marked as correct if it contains a student score greater than or equal to the question points possible.
Grade breakdown responses are shown as the top 27% , middle 46% , and bottom 27% . The statistics also show submissions that have not yet been graded . However, if all scores are identical, a response category may show more than the percentage number of students (e.g., all students score 100%).
Manually graded questions also include access to SpeedGrader for quick reference .
View Discrimination Index
True/False and Multiple Choice quiz questions include an item discrimination index, which attempts to look at a spread of scores and reflect differences in student achievement. This metric provides a measure of how well a single question can tell the difference (or discriminate) between students who do well on an exam and those who do not. It divides students into three groups based on their score on the whole quiz and displays those groups by who answered the question correctly.
Lower discrimination scores (in red) are scored +0.24 or lower; good scores (green) are +0.25 or higher. An ideal discrimination index shows students who scored higher on the quiz getting the quiz question right, students who scored lower on the quiz getting the quiz question wrong, and students in the middle range on either side. A discrimination index of zero shows all students getting the quiz question right or wrong.