In the documentation it says "quiz stats will only display the kept score for the student (highest score or latest score)."
Jonathan, for the first question, my recommendation is to post it at the bottom of the guide you referenced. Canvas employees who update and maintain the guides will see your question and be able to clarify this for you.
For thr second question, no, not directly. If you wanted students to have access to this information you would need to save it as some type of file and then provide it to your students.
Hope this helps! Kona
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