This quiz is meant for course participants to assess their knowledge level in R.

If you are not able to answer some question(s) correctly, it is an indication that you may need to gain a deeper understanding of the corresponding topic to fully benefit from the course. Some pointers to self-study material are given below, but note that there is plenty of excellent material available and this is not a complete list.

Links to good, general/specific introductory online material and resources for self-study:

    http://www-huber.embl.de/users/klaus/tidyverse_R_intro/R-lab.html

    https://git.embl.de/klaus/tidyverse_R_intro 

    http://adv-r.had.co.nz/Subsetting.html

    https://www.datacamp.com/community/tutorials/r-data-import-tutorial

    https://github.com/noamross/zero-dependency-problems/blob/master/misc/stack-overflow-common-r-errors.md

    https://www.r-bloggers.com/r-tip-avoid-using-t-and-f-as-synonyms-for-true-and-false/