start troubleshooting guesser script; simplified a few loops; still not working as it should though
save median time as xlsx also; save both time and easiness information as Rda
added description of easiness_time_level script
new script that takes easiness, time and level information for color-coded plot(s)
add column name to list of plotted times before saving to .Rda
first draft
correct a few mistakes to get a version that at least compiles; need to check
account for a bug in instructor-provided script; the data extraction part works fine now
managed to do a color-coded scatterplot for all quizzes combinedo
made separate easiness/time/level plots for each quiz
updated to-do list
done (for now) with easiness_time_level