Hi, S. Moodle,
I have submitted a plugin for the Moodle Quiz module called Live Report. I think it does what you requested. (Thanks for your good suggestions about an interface that teachers would like for each question.) Specifically, this module allows teachers to obtain a Live Report (table or spreadsheet) that lists all the student answers to date for all the questions in the quiz. As students submit new answers or change their answers, the Live Report changes dynamically. If the teacher wishes the teacher can click a button/link that will show the grades that each question would get if the quiz were graded. (This does not grade the quiz, but just indicates the grade that would be given if and when the teacher grades the quiz.)
Specific to yoru request, in the top row of the Report, each question is listed by using the question name and this question name is a link. If the teacher clicks on the link, the results to date for that question are displayed in a new tab in the teacher's browser. For multichoice, true-false, and calculated multichoice questions, this display is a histogram. For essay questions and other types of questions, the display gives each student a row in the display window, displaying thier response there. (If you have suggestions about a better way to display these responses, please let me know.) This display can be shown anonymously or each student's name can be listed in front of their answer.
I have submitted this module for Moodle approval. If you want to go to the Tracker for this plugin and vote for this plugin, that would be great: https://tracker.moodle.org/browse/CONTRIB-7378
Even though this plugin has not yet been approved, it has its own plugin page on Moodle.
https://moodle.org/plugins/quiz_liveviewgrid
I think you have to be logged in to see this page. If you have trouble, you can always go to the Github site and obtain the plugin. https://github.com/wjunkin/moodle-quiz_liveviewgrid/tree/histogram
As always, any feedback or suggestions for improvement are always appreciated.