For running J!5.1 you must https://fabrikar.com/forums/index.php?wiki/update-from-github/ or include the new file manually https://fabrikar.com/forums/index.php?threads/joomla-5-1-and-fabrik-cannot-find-files-error.54473/post-285151 See also Announcements
See Announcement
We have resolved the issue with the J! updater and this will be fixed in the next release.
Of course. You don't say how your data is arranged, e.g. if those calcs are already done and the results exist in a dedicated table.They are data calculated from the database (sums, means, medians, percents, etc.)
I don't think there is any viz, Fabrik or else, which will easily let you display the data as per your examples. So, it'll require custom work, anyway.I can do it with a visualization plugin, which of them?